Disallow dynamic mapping

Added config mapping

Original commit: elastic/x-pack-elasticsearch@f3de2c17bd

src/main/resources/alerthistory.json

@@ -4,7 +4,8 @@
   "settings": {
     "index.number_of_shards": 1,
     "index.number_of_replicas": 1,
-    "index.alerts.template_version": 1
+    "index.alerts.template_version": 1,
+    "index.mapper.dynamic" : false
   },
   "mappings": {
     "alerthistory": {

src/main/resources/alerts.json

@@ -4,7 +4,8 @@
   "settings": {
     "index.number_of_shards": 1,
     "index.number_of_replicas": 1,
-    "index.alerts.template_version": 1
+    "index.alerts.template_version": 1,
+    "index.mapper.dynamic" : false
   },
   "mappings": {
     "alert": {
@@ -53,6 +54,10 @@
           "dynamic": true
         }
       }
+    },
+    "config": {
+      "enabled" : false,
+      "properties" : {}
     }
   }
 }