Convert more docs to // CONSOLE

Converts docs for `_cat/segments`, `_cat/plugins` and `_cat/repositories`
from `curl` to `// CONSOLE` so they are tested as part of the build and
are cleaner to use in Console. They should work fine with `curl` with
the `COPY AS CURL` link.

Also swaps the `source` type of the response from `js` to `txt` because
that is more correct. The syntax highlighter doesn't care. It looks at
the text to figure out the language. So it looks a little funny for `_cat`
responses regardless.

Relates to #18160

docs/build.gradle

@@ -93,10 +93,7 @@ buildRestTests.expectedUnconvertedCandidates = [
   'reference/analysis/tokenfilters/stop-tokenfilter.asciidoc',
   'reference/analysis/tokenfilters/synonym-tokenfilter.asciidoc',
   'reference/analysis/tokenfilters/word-delimiter-tokenfilter.asciidoc',
-  'reference/cat/plugins.asciidoc',
   'reference/cat/recovery.asciidoc',
-  'reference/cat/repositories.asciidoc',
-  'reference/cat/segments.asciidoc',
   'reference/cat/shards.asciidoc',
   'reference/cat/snapshots.asciidoc',
   'reference/cat/templates.asciidoc',

docs/reference/cat/alias.asciidoc

@@ -41,7 +41,7 @@ GET /_cat/aliases?v
 
 Might respond with:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 alias  index filter routing.index routing.search
 alias1 test1 -      -            -

docs/reference/cat/allocation.asciidoc

@@ -13,7 +13,7 @@ GET /_cat/allocation?v
 
 Might respond with:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 shards disk.indices disk.used disk.avail disk.total disk.percent host      ip        node
      5         260b    47.3gb     43.4gb    100.7gb           46 127.0.0.1 127.0.0.1 CSUXak2

docs/reference/cat/count.asciidoc

@@ -14,7 +14,7 @@ GET /_cat/count?v
 
 Looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 epoch      timestamp count
 1475868259 15:24:19  121
@@ -30,7 +30,7 @@ GET /_cat/count/twitter?v
 // CONSOLE
 // TEST[continued]
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 epoch      timestamp count
 1475868259 15:24:20  120

docs/reference/cat/fielddata.asciidoc

@@ -47,7 +47,7 @@ GET /_cat/fielddata?v
 
 Looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 id                     host      ip        node    field   size
 Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in body    544b
@@ -67,7 +67,7 @@ GET /_cat/fielddata?v&fields=body
 
 Which looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 id                     host      ip        node    field   size
 Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in body    544b
@@ -86,7 +86,7 @@ GET /_cat/fielddata/body,soul?v
 
 Which produces the same output as the first snippet:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 id                     host      ip        node    field   size
 Nqk-6inXQq-OxUfOUI8jNQ 127.0.0.1 127.0.0.1 Nqk-6in body    544b

docs/reference/cat/health.asciidoc

@@ -11,7 +11,7 @@ GET /_cat/health?v
 // CONSOLE
 // TEST[s/^/PUT twitter\n{"settings":{"number_of_replicas": 0}}\n/]
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 epoch      timestamp cluster       status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
 1475871424 16:17:04  elasticsearch green           1         1      5   5    0    0        0             0                  -                100.0%
@@ -29,7 +29,7 @@ GET /_cat/health?v&ts=0
 
 which looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 cluster       status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
 elasticsearch green           1         1      5   5    0    0        0             0                  -                100.0%

docs/reference/cat/indices.asciidoc

@@ -14,7 +14,7 @@ GET /_cat/indices/twi*?v&s=index
 
 Might respond with:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 health status index    uuid                   pri rep docs.count docs.deleted store.size pri.store.size
 yellow open   twitter  u8FNjxh8Rfy_awN11oDKYQ   1   1       1200            0     88.1kb         88.1kb
@@ -51,7 +51,7 @@ GET /_cat/indices?v&health=yellow
 
 Which looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 health status index    uuid                   pri rep docs.count docs.deleted store.size pri.store.size
 yellow open   twitter  u8FNjxh8Rfy_awN11oDKYQ   1   1       1200            0     88.1kb         88.1kb
@@ -71,7 +71,7 @@ GET /_cat/indices?v&s=store.size:desc
 
 Which looks like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 health status index    uuid                   pri rep docs.count docs.deleted store.size pri.store.size
 yellow open   twitter  u8FNjxh8Rfy_awN11oDKYQ   1   1       1200            0     88.1kb         88.1kb

docs/reference/cat/master.asciidoc

@@ -12,7 +12,7 @@ GET /_cat/master?v
 
 might respond:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 id                     host      ip        node
 YzWoH_2BT-6UjVGDyPdqYg 127.0.0.1 127.0.0.1 YzWoH_2

docs/reference/cat/nodeattrs.asciidoc

@@ -12,7 +12,7 @@ GET /_cat/nodeattrs?v
 
 Could look like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 node    host      ip        attr     value
 EK_AsJb 127.0.0.1 127.0.0.1 testattr test

docs/reference/cat/nodes.asciidoc

@@ -11,7 +11,7 @@ GET /_cat/nodes?v
 
 Might look like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 ip        heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
 127.0.0.1           65          99  42    3.07                  mdi       *      mJw06l1

docs/reference/cat/pending_tasks.asciidoc

@@ -13,7 +13,7 @@ GET /_cat/pending_tasks?v
 
 Might look like:
 
-[source,js]
+[source,txt]
 --------------------------------------------------
 insertOrder timeInQueue priority source
        1685       855ms HIGH     update-mapping [foo][t]

docs/reference/cat/plugins.asciidoc

@@ -3,12 +3,36 @@
 
 The `plugins` command provides a view per node of running plugins. This information *spans nodes*.
 
-[source,sh]
+[source,js]
 ------------------------------------------------------------------------------
-% curl 'localhost:9200/_cat/plugins?v'
+GET /_cat/plugins?v&s=component&h=name,component,version,description
-name    component       version        description
+------------------------------------------------------------------------------
-I8hydUG discovery-gce   5.0.0          The Google Compute Engine (GCE) Discovery plugin allows to use GCE API for the unicast discovery mechanism.
+// CONSOLE
-I8hydUG lang-javascript 5.0.0          The JavaScript language plugin allows to have javascript as the language of scripts to execute.
+
+Might look like:
+
+["source","txt",subs="attributes,callouts"]
+------------------------------------------------------------------------------
+name    component               version   description
+U7321H6 analysis-icu            {version} The ICU Analysis plugin integrates Lucene ICU module into elasticsearch, adding ICU relates analysis components.
+U7321H6 analysis-kuromoji       {version} The Japanese (kuromoji) Analysis plugin integrates Lucene kuromoji analysis module into elasticsearch.
+U7321H6 analysis-phonetic       {version} The Phonetic Analysis plugin integrates phonetic token filter analysis with elasticsearch.
+U7321H6 analysis-smartcn        {version} Smart Chinese Analysis plugin integrates Lucene Smart Chinese analysis module into elasticsearch.
+U7321H6 analysis-stempel        {version} The Stempel (Polish) Analysis plugin integrates Lucene stempel (polish) analysis module into elasticsearch.
+U7321H6 discovery-azure-classic {version} The Azure Classic Discovery plugin allows to use Azure Classic API for the unicast discovery mechanism
+U7321H6 discovery-ec2           {version} The EC2 discovery plugin allows to use AWS API for the unicast discovery mechanism.
+U7321H6 discovery-file          {version} Discovery file plugin enables unicast discovery from hosts stored in a file.
+U7321H6 discovery-gce           {version} The Google Compute Engine (GCE) Discovery plugin allows to use GCE API for the unicast discovery mechanism.
+U7321H6 ingest-attachment       {version} Ingest processor that uses Apache Tika to extract contents
+U7321H6 ingest-geoip            {version} Ingest processor that uses looksup geo data based on ip adresses using the Maxmind geo database
+U7321H6 ingest-user-agent       {version} Ingest processor that extracts information from a user agent
+U7321H6 jvm-example             {version} Demonstrates all the pluggable Java entry points in Elasticsearch
+U7321H6 lang-javascript         {version} The JavaScript language plugin allows to have javascript as the language of scripts to execute.
+U7321H6 lang-python             {version} The Python language plugin allows to have python as the language of scripts to execute.
+U7321H6 mapper-murmur3          {version} The Mapper Murmur3 plugin allows to compute hashes of a field's values at index-time and to store them in the index.
+U7321H6 mapper-size             {version} The Mapper Size plugin allows document to record their uncompressed size at index time.
+U7321H6 store-smb               {version} The Store SMB plugin adds support for SMB stores.
 -------------------------------------------------------------------------------
+// TESTRESPONSE[s/([.()])/\\$1/ s/U7321H6/.+/ _cat]
 
 We can tell quickly how many plugins per node we have and which versions.

docs/reference/cat/repositories.asciidoc

@@ -1,14 +1,24 @@
 [[cat-repositories]]
 == cat repositories
 
-The `repositories` command shows the snapshot repositories registered in the cluster.
+The `repositories` command shows the snapshot repositories registered in the
+cluster. For example:
 
-[source,sh]
+[source,js]
+--------------------------------------------------
+GET /_cat/repositories?v
+--------------------------------------------------
+// CONSOLE
+// TEST[s/^/PUT \/_snapshot\/repo1\n{"type": "fs", "settings": {"location": "repo\/1"}}\n/]
+
+might looks like:
+
+[source,txt]
 --------------------------------------------------
-% curl 'localhost:9200/_cat/repositories?v'
 id    type
 repo1   fs
 repo2   s3
 --------------------------------------------------
+// TESTRESPONSE[s/\nrepo2   s3// _cat]
 
 We can quickly see which repositories are registered and their type.

docs/reference/cat/segments.asciidoc

@@ -3,24 +3,24 @@
 
 The `segments` command provides low level information about the segments
 in the shards of an index. It provides information similar to the
-link:indices-segments.html[_segments] endpoint.
+link:indices-segments.html[_segments] endpoint. For example:
 
-[source,sh]
+[source,js]
 --------------------------------------------------
-% curl 'http://localhost:9200/_cat/segments?v'
+GET /_cat/segments?v
-index shard prirep ip            segment generation docs.count [...]
-test  4     p      192.168.2.105 _0               0          1
-test1 2     p      192.168.2.105 _0               0          1
-test1 3     p      192.168.2.105 _2               2          1
 --------------------------------------------------
+// CONSOLE
+// TEST[s/^/PUT \/test\/test\/1?refresh\n{"test":"test"}\nPUT \/test1\/test\/1?refresh\n{"test":"test"}\n/]
 
-[source,sh]
+might look like:
+
+["source","txt",subs="attributes,callouts"]
 --------------------------------------------------
-[...] docs.deleted  size size.memory committed searchable version compound
+index shard prirep ip        segment generation docs.count docs.deleted size size.memory committed searchable version compound
-                 0 2.9kb        7818 false     true       4.10.2  true
+test  3     p      127.0.0.1 _0               0          1            0  3kb        2042 false     true       {lucene_version}   true
-                 0 2.9kb        7818 false     true       4.10.2  true
+test1 3     p      127.0.0.1 _0               0          1            0  3kb        2042 false     true       {lucene_version}   true
-                 0 2.9kb        7818 false     true       4.10.2  true
 --------------------------------------------------
+// TESTRESPONSE[s/3kb/\\d+(\\.\\d+)?[mk]?b/ s/2042/\\d+/ _cat]
 
 The output shows information about index names and shard numbers in the first
 two columns.