[manila] 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: If98615cffab75b0759f25ef205b364d106896cee

deliverables/ussuri/manila-ui.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/manila-ui
         hash: 6054c99f11e3f751f04084591e2a24f968190bbf
+  - version: ussuri-em
+    projects:
+      - repo: openstack/manila-ui
+        hash: 6054c99f11e3f751f04084591e2a24f968190bbf
 branches:
   - name: stable/ussuri
     location: 3.0.0

deliverables/ussuri/manila.yaml

@@ -53,6 +53,10 @@ releases:
     projects:
       - repo: openstack/manila
         hash: ad152a4717e66e19d0ad1bb209081cb7d61741b4
+  - version: ussuri-em
+    projects:
+      - repo: openstack/manila
+        hash: ad152a4717e66e19d0ad1bb209081cb7d61741b4
 branches:
   - name: stable/ussuri
     location: 10.0.0.0rc1

deliverables/ussuri/python-manilaclient.yaml

@@ -15,6 +15,10 @@ releases:
     projects:
       - repo: openstack/python-manilaclient
         hash: 3371c543036a0f9f7b485489c490de4bd8cb52d1
+  - version: ussuri-em
+    projects:
+      - repo: openstack/python-manilaclient
+        hash: 3371c543036a0f9f7b485489c490de4bd8cb52d1
 branches:
   - name: stable/ussuri
     location: 2.1.0