[DOCS] Updated installation pages with X-Pack indices (#29077)

docs/reference/setup/install/deb.asciidoc

@@ -128,6 +128,15 @@ sudo dpkg -i elasticsearch-{version}.deb
 
 endif::[]
 
+ifdef::include-xpack[]
+[[deb-enable-indices]]
+==== Enable automatic creation of {xpack} indices
+
+{xpack} will try to automatically create a number of indices within Elasticsearch.
+include::{xes-repo-dir}/setup/xpack-indices.asciidoc[]
+
+endif::include-xpack[]
+
 include::init-systemd.asciidoc[]
 
 [[deb-running-init]]

docs/reference/setup/install/rpm.asciidoc

@@ -115,6 +115,15 @@ endif::[]
 
 include::skip-set-kernel-parameters.asciidoc[]
 
+ifdef::include-xpack[]
+[[rpm-enable-indices]]
+==== Enable automatic creation of {xpack} indices
+
+{xpack} will try to automatically create a number of indices within {es}.
+include::{xes-repo-dir}/setup/xpack-indices.asciidoc[]
+
+endif::include-xpack[]
+
 include::init-systemd.asciidoc[]
 
 [[rpm-running-init]]

docs/reference/setup/install/windows.asciidoc

@@ -326,6 +326,15 @@ start /wait msiexec.exe /i elasticsearch-{version}.msi /qn INSTALLDIR="C:\Custom
 Consult the https://msdn.microsoft.com/en-us/library/windows/desktop/aa367988(v=vs.85).aspx[Windows Installer SDK Command-Line Options]
 for additional rules related to values containing quotation marks.
 
+ifdef::include-xpack[]
+[[msi-installer-enable-indices]]
+==== Enable automatic creation of {xpack} indices
+
+{xpack} will try to automatically create a number of indices within {es}.
+include::{xes-repo-dir}/setup/xpack-indices.asciidoc[]
+
+endif::include-xpack[]
+
 [[msi-installer-command-line-running]]
 ==== Running Elasticsearch from the command line
 

docs/reference/setup/install/zip-targz.asciidoc

@@ -70,6 +70,15 @@ cd elasticsearch-{version}/ <2>
 
 endif::[]
 
+ifdef::include-xpack[]
+[[zip-targz-enable-indices]]
+==== Enable automatic creation of {xpack} indices
+
+{xpack} will try to automatically create a number of indices within {es}.
+include::{xes-repo-dir}/setup/xpack-indices.asciidoc[]
+
+endif::include-xpack[]
+
 [[zip-targz-running]]
 ==== Running Elasticsearch from the command line
 

docs/reference/setup/install/zip-windows.asciidoc

@@ -42,6 +42,15 @@ cd c:\elasticsearch-{version}
 
 endif::[]
 
+ifdef::include-xpack[]
+[[windows-enable-indices]]
+==== Enable automatic creation of {xpack} indices
+
+{xpack} will try to automatically create a number of indices within {es}.
+include::{xes-repo-dir}/setup/xpack-indices.asciidoc[]
+
+endif::include-xpack[]
+
 [[windows-running]]
 ==== Running Elasticsearch from the command line