[ec2-api] Transition Rocky to EM

This transition the rocky 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.

Change-Id: Iaee0cf31cb028b933eb188b8834ea3091ccee527

deliverables/rocky/ec2-api.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/ec2-api
         hash: 99ef804daf090f7b107acf4484e829e6b7f2bb32
+  - version: rocky-em
+    projects:
+      - repo: openstack/ec2-api
+        hash: 99ef804daf090f7b107acf4484e829e6b7f2bb32
 branches:
   - location: 7.0.0
     name: stable/rocky

deliverables/rocky/ec2api-tempest-plugin.yaml

@@ -10,6 +10,10 @@ releases:
     version: 0.1.0
     flags:
       - forced
+  - version: rocky-em
+    projects:
+      - repo: openstack/ec2api-tempest-plugin
+        hash: ba836d429f38ce0831cf336feb2a620fdcf3efcb
 repository-settings:
   openstack/ec2api-tempest-plugin: {}
 team: ec2-api