[cloudkitty] Transition Xena to EM

This transition the stable/xena 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 after the transition.

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 April 20th, 2023.

Change-Id: I318e3abcb5aa4eae087a2e1f93d321734a75d796

deliverables/xena/cloudkitty-dashboard.yaml

@@ -16,6 +16,10 @@ releases:
       - repo: openstack/cloudkitty-dashboard
         hash: d3fdbcdf60e85fe738fd84809703c4230b4b915f
     diff-start: 12.0.0
+  - version: xena-em
+    projects:
+      - repo: openstack/cloudkitty-dashboard
+        hash: d3fdbcdf60e85fe738fd84809703c4230b4b915f
 branches:
   - name: stable/xena
     location: 13.0.0.0rc1

deliverables/xena/cloudkitty.yaml

@@ -34,6 +34,10 @@ releases:
     projects:
       - repo: openstack/cloudkitty
         hash: 502e42154aa75d67fb823c362577712fe3b6971d
+  - version: xena-em
+    projects:
+      - repo: openstack/cloudkitty
+        hash: 502e42154aa75d67fb823c362577712fe3b6971d
 branches:
   - name: stable/xena
     location: 15.0.0.0rc1

deliverables/xena/python-cloudkittyclient.yaml

@@ -11,6 +11,10 @@ releases:
     projects:
       - repo: openstack/python-cloudkittyclient
         hash: 647f561532c2b4b9c3af6918816faf997db20abb
+  - version: xena-em
+    projects:
+      - repo: openstack/python-cloudkittyclient
+        hash: 647f561532c2b4b9c3af6918816faf997db20abb
 branches:
   - name: stable/xena
     location: 4.3.0