[mistral] create pike-em tag against final releases

This is a procedural review to transition pike into extended maintenance by
creating the pike-em tag

It's possible that the release isn't needed (for example if there are no code
changes sine the previous release, sadly that's non-trivial to detect en masse.

If you are the PTL or release liaison for this team please +1 this review
if it is ready or -1 and take over the review to correct mistakes.

Change-Id: Ia2f17d020bb925e3c9e365baa3cf6e22d4f2ba58

deliverables/pike/mistral-lib.yaml

@@ -33,6 +33,10 @@ releases:
       - hash: d01ab6f50754594d20bd7a05a807e5fc6661f08e
         repo: openstack/mistral-lib
     version: 0.3.4
+  - projects:
+      - hash: d01ab6f50754594d20bd7a05a807e5fc6661f08e
+        repo: openstack/mistral-lib
+    version: pike-em
 branches:
   - name: stable/pike
     location: 0.2.0

deliverables/pike/mistral.yaml

@@ -109,6 +109,14 @@ releases:
       - hash: caed955c442da4f7ac16fccb0d886e5860a8f98b
         repo: openstack/mistral
     version: 5.2.8
+  - projects:
+      - hash: caed955c442da4f7ac16fccb0d886e5860a8f98b
+        repo: openstack/mistral
+      - hash: 2d3ad3bed37a711d122912230e6baa8d145a83ee
+        repo: openstack/mistral-dashboard
+      - hash: 58a816da3b810ae8b31c91a0829bdca3e0e5903e
+        repo: openstack/mistral-extra
+    version: pike-em
 branches:
   - location: 5.0.0.0rc1
     name: stable/pike

deliverables/pike/python-mistralclient.yaml

@@ -33,5 +33,9 @@ releases:
       - hash: 27ed79076f7d70bca8e968c70571d9f1f645eacf
         repo: openstack/python-mistralclient
     version: 3.1.5
+  - projects:
+      - hash: 27ed79076f7d70bca8e968c70571d9f1f645eacf
+        repo: openstack/python-mistralclient
+    version: pike-em
 repository-settings:
   openstack/python-mistralclient: {}