[adjutant] 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: I939e5da546e67bdeac441b69f85bbe2469a2295a

deliverables/xena/adjutant-ui.yaml

@@ -16,6 +16,10 @@ releases:
       - repo: openstack/adjutant-ui
         hash: 104c474479e9a89d22b96777378ff59983c03393
     diff-start: 2.0.0
+  - version: xena-em
+    projects:
+      - repo: openstack/adjutant-ui
+        hash: 104c474479e9a89d22b96777378ff59983c03393
 branches:
   - name: stable/xena
     location: 3.0.0.0rc1

deliverables/xena/adjutant.yaml

@@ -20,6 +20,10 @@ releases:
     projects:
       - repo: openstack/adjutant
         hash: f8cd1d888fc2335dbc9edcd63e4aa5ff54fac8b7
+  - version: xena-em
+    projects:
+      - repo: openstack/adjutant
+        hash: f8cd1d888fc2335dbc9edcd63e4aa5ff54fac8b7
 branches:
   - name: stable/xena
     location: 3.0.0.0rc1

deliverables/xena/python-adjutantclient.yaml

@@ -11,6 +11,10 @@ releases:
     projects:
       - repo: openstack/python-adjutantclient
         hash: 20d234bc370056184a0885e6e6f735db056668a2
+  - version: xena-em
+    projects:
+      - repo: openstack/python-adjutantclient
+        hash: 20d234bc370056184a0885e6e6f735db056668a2
 branches:
   - name: stable/xena
     location: 0.9.0