[vitrage] Transition Wallaby to EM

This transition the wallaby branch to extended maintenance.
Changes for bugfixes and things the team deems important are
still encouraged, but there will no longer be official releases
off of the branch.

Please +1 if the team is ready for us to proceed with this
transition, or -1 if there are any final backports currently in
flight that we should wait for. For the latter case, please
update the patch with the new commit hash after doing a final
release to get those changes out so we know to proceed with the
transition.

The transition deadline is November 2nd, 2022.

Change-Id: I6e6c6b561cc8615508d68993184b02e035b4e443

deliverables/wallaby/python-vitrageclient.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/python-vitrageclient
         hash: 8293be5fed973d6e4a06a18e4aad16868412e021
+  - version: wallaby-em
+    projects:
+      - repo: openstack/python-vitrageclient
+        hash: 8293be5fed973d6e4a06a18e4aad16868412e021
 branches:
   - name: stable/wallaby
     location: 4.3.0

deliverables/wallaby/vitrage-dashboard.yaml

@@ -10,6 +10,10 @@ releases:
     projects:
       - repo: openstack/vitrage-dashboard
         hash: 227cf737817e7c8d6eb923bc3853d61d9fb6eaae
+  - version: wallaby-em
+    projects:
+      - repo: openstack/vitrage-dashboard
+        hash: 227cf737817e7c8d6eb923bc3853d61d9fb6eaae
 branches:
   - name: stable/wallaby
     location: 3.3.0

deliverables/wallaby/vitrage.yaml

@@ -10,6 +10,10 @@ releases:
     projects:
       - repo: openstack/vitrage
         hash: fd833604d7ec06259a5e8b41eabeabd240a9cc2d
+  - version: wallaby-em
+    projects:
+      - repo: openstack/vitrage
+        hash: fd833604d7ec06259a5e8b41eabeabd240a9cc2d
 branches:
   - name: stable/wallaby
     location: 7.4.0