Zed final releases for cycle-with-rc projects

This tags the final release for all cycle-with-rc projects for Zed.
While not required, having PTLs ack this patch would be nice to include
that record in the merged metadata.

Release activity should now be frozen until this is processed on
October 5th. Any bugfixes merged to stable/zed can be queued up and
ready to go as a follow on stable release after the coordinated release
date.

There are different diff-start values for each project. This is used
when generating release notes to denote the point where the stable/yoga
branch started to diverge from what is included on stable/zed. For
some, this will be the final Yoga major version, but if multiple RCs
were done, this may show the initial RC1 release version. This is
normal.

This patch will be merged on October 5th.

Change-Id: I89c7eb88c86f012536713e1ad7aa5b243aaf7f83

deliverables/zed/keystone.yaml

@@ -10,6 +10,11 @@ releases:
     projects:
       - repo: openstack/keystone
         hash: 1ea9f7557dc442c56805f70b3f0c9393b427a770
+  - version: 22.0.0
+    projects:
+      - repo: openstack/keystone
+        hash: 1ea9f7557dc442c56805f70b3f0c9393b427a770
+    diff-start: 21.0.0
 branches:
   - name: stable/zed
     location: 22.0.0.0rc1