[kolla] 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: I37db8ea654bd48bb5263e1857ac79dffef8fffc6

deliverables/xena/kayobe.yaml

@@ -93,6 +93,14 @@ releases:
     projects:
       - repo: openstack/kayobe
         hash: 76fbde18334bbbf420bd6269d5ebf1799490ecf0
+  - version: xena-em
+    projects:
+      - repo: openstack/kayobe
+        hash: 76fbde18334bbbf420bd6269d5ebf1799490ecf0
+      - repo: openstack/kayobe-config
+        hash: bb7432adf8444f26a19b29772bfde11e1e225f34
+      - repo: openstack/kayobe-config-dev
+        hash: bbd872afb07722ac433c8c095921b6cc0860d9ae
 branches:
   - name: stable/xena
     location: 11.0.0.0rc1

deliverables/xena/kolla-ansible.yaml

@@ -63,6 +63,10 @@ releases:
     projects:
       - repo: openstack/kolla-ansible
         hash: 163b4dd25309a05949749a49868bd4fcf1ca6045
+  - version: xena-em
+    projects:
+      - repo: openstack/kolla-ansible
+        hash: 163b4dd25309a05949749a49868bd4fcf1ca6045
 branches:
   - name: stable/xena
     location: 13.0.0.0rc1

deliverables/xena/kolla.yaml

@@ -71,6 +71,10 @@ releases:
     projects:
       - repo: openstack/kolla
         hash: 688812ff16f24ffbb4a861fdddfb4fba7a62399a
+  - version: xena-em
+    projects:
+      - repo: openstack/kolla
+        hash: 688812ff16f24ffbb4a861fdddfb4fba7a62399a
 branches:
   - name: stable/xena
     location: 13.0.0.0rc1