[searchlight] 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: Ib578a99797e303777160a172c9444dd83fea6fb6

deliverables/stein/python-searchlightclient.yaml

@@ -15,6 +15,10 @@ releases:
       - hash: d363f6ba6b3820c41eac033dc151f69fe24a278c
         repo: openstack/python-searchlightclient
     version: 1.5.1
+  - version: stein-em
+    projects:
+      - repo: openstack/python-searchlightclient
+        hash: d363f6ba6b3820c41eac033dc151f69fe24a278c
 team: searchlight
 type: client-library
 repository-settings:

deliverables/stein/searchlight-ui.yaml

@@ -24,6 +24,10 @@ releases:
       - hash: ee2e37107bf6da33133b15b410edb48f9f459f58
         repo: openstack/searchlight-ui
     version: 6.0.0
+  - version: stein-em
+    projects:
+      - repo: openstack/searchlight-ui
+        hash: ee2e37107bf6da33133b15b410edb48f9f459f58
 team: searchlight
 type: horizon-plugin
 repository-settings:

deliverables/stein/searchlight.yaml

@@ -23,6 +23,10 @@ releases:
       - hash: acd19c3559a83582b438757adb2b6408710dbdb8
         repo: openstack/searchlight
     version: 6.0.0
+  - version: stein-em
+    projects:
+      - repo: openstack/searchlight
+        hash: acd19c3559a83582b438757adb2b6408710dbdb8
 team: searchlight
 type: service
 repository-settings: