[watcher] 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: I62c499d34bf679ed9750c521be1e4b9b3d24461d

deliverables/wallaby/python-watcherclient.yaml

@@ -11,6 +11,10 @@ releases:
     projects:
       - repo: openstack/python-watcherclient
         hash: 6a33b44d7f989043e448030c518210744b35a08e
+  - version: wallaby-em
+    projects:
+      - repo: openstack/python-watcherclient
+        hash: 6a33b44d7f989043e448030c518210744b35a08e
 branches:
   - name: stable/wallaby
     location: 3.2.0

deliverables/wallaby/watcher-dashboard.yaml

@@ -20,6 +20,10 @@ releases:
     projects:
       - repo: openstack/watcher-dashboard
         hash: ce5b07f3a2c03c351ca216e7ece81da82e3262ae
+  - version: wallaby-em
+    projects:
+      - repo: openstack/watcher-dashboard
+        hash: ce5b07f3a2c03c351ca216e7ece81da82e3262ae
 branches:
   - name: stable/wallaby
     location: 5.0.0.0rc1

deliverables/wallaby/watcher.yaml

@@ -20,6 +20,10 @@ releases:
     projects:
       - repo: openstack/watcher
         hash: d60e2a96e4997a1d0ed1ac73d6ea9b622c1dd73f
+  - version: wallaby-em
+    projects:
+      - repo: openstack/watcher
+        hash: d60e2a96e4997a1d0ed1ac73d6ea9b622c1dd73f
 branches:
   - name: stable/wallaby
     location: 6.0.0.0rc1