Make Ingest Architecture docs generally available (#2742)

Set Ingest Arch docs to 8.9

Author: karenzone

conf.yaml

@@ -272,6 +272,22 @@ contents:
               -
                 repo:   ecs
                 path:   docs/
+          - title:      Elastic Ingest Reference Architectures
+            prefix:     en/ingest
+            current:    *stackcurrent
+            index:      docs/en/ingest-arch/index.asciidoc
+            branches:   [ {main: master}, 8.9 ]
+            live:       [ 8.9 ]
+            chunk:      1
+            tags:       Ingest/Reference
+            subject:    Ingest
+            sources:
+              -
+                repo:   ingest-docs
+                path:   docs/en
+              -
+                repo:   docs
+                path:   shared/attributes.asciidoc
           - title:      Azure Marketplace and Resource Manager (ARM) template
             prefix:     en/elastic-stack-deploy
             current:    7.11
@@ -2326,22 +2342,6 @@ contents:
               -
                 repo:   docs
                 path:   shared/attributes.asciidoc
-          - title:      Ingest Reference Architectures
-            prefix:     en/ingest
-            current:    main
-            index:      docs/en/ingest-arch/index.asciidoc
-            branches:   [ {main: master} ]
-            noindex:    1
-            chunk:      1
-            tags:       Ingest/Reference
-            subject:    Ingest
-            sources:
-              -
-                repo:   ingest-docs
-                path:   docs/en
-              -
-                repo:   docs
-                path:   shared/attributes.asciidoc
 
     -   title:      Legacy Documentation
         sections: