[freezer] Transition Ussuri to EM

This transition the ussuri 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: I88d5d87afede51e436daf9295f4c42b7061049ee

deliverables/ussuri/freezer-web-ui.yaml

@@ -16,6 +16,10 @@ releases:
       - repo: openstack/freezer-web-ui
         hash: e5992486617ea000a0999ae7fc40bd1cb626116a
     diff-start: 7.2.0
+  - version: ussuri-em
+    projects:
+      - repo: openstack/freezer-web-ui
+        hash: e5992486617ea000a0999ae7fc40bd1cb626116a
 branches:
   - name: stable/ussuri
     location: 8.0.0.0rc1

deliverables/ussuri/freezer.yaml

@@ -25,6 +25,14 @@ releases:
       - repo: openstack/freezer-dr
         hash: 72de51b01c180fb18f062c7b47e25e8044aeb237
     diff-start: 7.2.0
+  - version: ussuri-em
+    projects:
+      - repo: openstack/freezer
+        hash: 851a17173b0e6f7f8d6d188406897b09c8b6b50e
+      - repo: openstack/freezer-api
+        hash: 11a19f2ea803c54ba78d41c964bc748a29752b99
+      - repo: openstack/freezer-dr
+        hash: 72de51b01c180fb18f062c7b47e25e8044aeb237
 branches:
   - name: stable/ussuri
     location: 8.0.0.0rc1

deliverables/ussuri/python-freezerclient.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/python-freezerclient
         hash: c2cb528d27841595344473ebd96fa6ef8af7de59
+  - version: ussuri-em
+    projects:
+      - repo: openstack/python-freezerclient
+        hash: c2cb528d27841595344473ebd96fa6ef8af7de59
 branches:
   - name: stable/ussuri
     location: 3.0.1