[murano] 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: I8f286a244b3e827e0c40a1b6302315470a7897c0

deliverables/xena/murano-agent.yaml

@@ -15,6 +15,10 @@ releases:
       - repo: openstack/murano-agent
         hash: db57214bb80c0d0d39de706fe5e9daa031f7c09c
     diff-start: 7.0.0
+  - version: xena-em
+    projects:
+      - repo: openstack/murano-agent
+        hash: db57214bb80c0d0d39de706fe5e9daa031f7c09c
 branches:
   - name: stable/xena
     location: 8.0.0.0rc1

deliverables/xena/murano-dashboard.yaml

@@ -16,6 +16,10 @@ releases:
       - repo: openstack/murano-dashboard
         hash: fb7d081bc89d9d2a80f0d49a32413c81f2d04289
     diff-start: 11.0.0
+  - version: xena-em
+    projects:
+      - repo: openstack/murano-dashboard
+        hash: fb7d081bc89d9d2a80f0d49a32413c81f2d04289
 branches:
   - name: stable/xena
     location: 12.0.0.0rc1

deliverables/xena/murano.yaml

@@ -15,6 +15,10 @@ releases:
       - repo: openstack/murano
         hash: 8ab430b2f4963e985f3f0de066bb8ddf1e89b847
     diff-start: 11.0.0
+  - version: xena-em
+    projects:
+      - repo: openstack/murano
+        hash: 8ab430b2f4963e985f3f0de066bb8ddf1e89b847
 branches:
   - name: stable/xena
     location: 12.0.0.0rc1

deliverables/xena/python-muranoclient.yaml

@@ -11,6 +11,10 @@ releases:
     projects:
       - repo: openstack/python-muranoclient
         hash: c3dd9639679abac46e384e1bfdbaad67ec1943f7
+  - version: xena-em
+    projects:
+      - repo: openstack/python-muranoclient
+        hash: c3dd9639679abac46e384e1bfdbaad67ec1943f7
 branches:
   - name: stable/xena
     location: 2.3.0