[magnum] Transition Pike to End of Life

This transition the Pike branch to End of Life. The last patch of the
branch will be tagged with pike-eol tag. The stable/pike branch cannot
be used anymore and will be deleted if this patch merges.

This is needed as stable/pike is not actively maintained in the recent
period and thus gates are mostly broken due to job failures. Besides,
by removing these branches, infra resources will be freed up, too.

Please try to identify any zuul job, that is defined outside of the
repositories in this patch (for example in openstack-zuul-jobs, etc.)
and won't be used anymore if stable/pike is deleted, and propose a job
removal patch for them.

Please +1 if the team is ready for us to proceed with this transition,
or -1 if there are still some activity on the branch and the team wants
to continue to maintain it.

Change-Id: I0aca3d0147a52d1023745f53b625b25a7a9388c3

deliverables/pike/magnum-ui.yaml

@@ -19,6 +19,10 @@ releases:
       - hash: 3dc74b280a01363a64a8d3d368fcba2882ef31bd
         repo: openstack/magnum-ui
     version: pike-em
+  - version: pike-eol
+    projects:
+      - repo: openstack/magnum-ui
+        hash: b5c7863bff3a8371b33a4a84e7a075a81d881cce
 release-notes: https://docs.openstack.org/releasenotes/magnum-ui/pike.html
 repository-settings:
   openstack/magnum-ui: {}

deliverables/pike/magnum.yaml

@@ -24,5 +24,9 @@ releases:
       - hash: 6777ba5640b5be87fe48561f9a8a63403b7d9d95
         repo: openstack/magnum
     version: pike-em
+  - version: pike-eol
+    projects:
+      - repo: openstack/magnum
+        hash: 0cfdd98b8d043ec894e44e134c5e43017999b292
 repository-settings:
   openstack/magnum: {}

deliverables/pike/python-magnumclient.yaml

@@ -21,6 +21,10 @@ releases:
       - hash: 2754b15cd4f2bf73441487a3dde526d61019849f
         repo: openstack/python-magnumclient
     version: pike-em
+  - version: pike-eol
+    projects:
+      - repo: openstack/python-magnumclient
+        hash: 9388bc18fd24abc4f292294d949479517a100e49
 branches:
   - name: stable/pike
     location: 2.7.0