7.2.0 release notes (#43343)

Author: jakelandis

docs/reference/migration/migrate_7_2.asciidoc

@@ -9,15 +9,11 @@ your application to Elasticsearch 7.2.
 
 See also <<release-highlights>> and <<es-release-notes>>.
 
-coming[7.2.0]
-
 //NOTE: The notable-breaking-changes tagged regions are re-used in the
 //Installation and Upgrade Guide
 
 //tag::notable-breaking-changes[]
 
-// end::notable-breaking-changes[]
-
 [float]
 [[breaking_72_discovery_changes]]
 === Discovery changes
@@ -30,3 +26,5 @@ In earlier versions you could include a range of ports in entries in the
 unexpectedly ignored the rest.  For instance if you set `discovery.seed_hosts:
 "10.11.12.13:9300-9310"` then {es} would only use `10.11.12.13:9300` for
 discovery. Seed host addresses containing port ranges are now rejected.
+
+// end::notable-breaking-changes[]

docs/reference/release-notes.asciidoc

@@ -6,6 +6,7 @@
 
 This section summarizes the changes in each release.
 
+* <<release-notes-7.2.0>>
 * <<release-notes-7.1.1>>
 * <<release-notes-7.1.0>>
 * <<release-notes-7.0.0>>
@@ -17,6 +18,7 @@ This section summarizes the changes in each release.
 
 --
 
+include::release-notes/7.2.asciidoc[]
 include::release-notes/7.1.asciidoc[]
 include::release-notes/7.0.asciidoc[]
 include::release-notes/7.0.0-rc2.asciidoc[]