[zun] Transition Stein to EM

This transition the stein 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: Id36b8a25e069dca32d623548598ec11f6fa0462b

deliverables/stein/python-zunclient.yaml

@@ -29,6 +29,10 @@ releases:
     projects:
       - repo: openstack/python-zunclient
         hash: 75517b5284c99e3d2be051963a42f981f3959f63
+  - version: stein-em
+    projects:
+      - repo: openstack/python-zunclient
+        hash: 75517b5284c99e3d2be051963a42f981f3959f63
 repository-settings:
   openstack/python-zunclient: {}
 branches:

deliverables/stein/zun-ui.yaml

@@ -12,6 +12,10 @@ releases:
     projects:
       - repo: openstack/zun-ui
         hash: 58ca0552d1e9bfad966431abb6292f57e67a6180
+  - version: stein-em
+    projects:
+      - repo: openstack/zun-ui
+        hash: 58ca0552d1e9bfad966431abb6292f57e67a6180
 repository-settings:
   openstack/zun-ui: {}
 branches:

deliverables/stein/zun.yaml

@@ -23,6 +23,10 @@ releases:
     projects:
       - repo: openstack/zun
         hash: 307617805dfb2ca32761c2db3aaa472b6811a7bf
+  - version: stein-em
+    projects:
+      - repo: openstack/zun
+        hash: 307617805dfb2ca32761c2db3aaa472b6811a7bf
 branches:
   - location: 3.0.0.0rc1
     name: stable/stein