Release Yoga RC1 for keystone

This patch proposes an RC1 release for keystone to get any merged
changes out prior to the RC1 deadline for Yoga going into effect.

If the team is ready to proceed, please leave a +1 to acknowledge this
release and we will process right away. If the team is working on any
final merges, leave a -1 with some detail on the status and update the
patch with the new commit hash to use when ready.

Patches with no response will be merged by Thursday, March 10th.

Signed-off-by: Elod Illes <elod.illes@est.tech>
Change-Id: Ib4d73eb16838e24cd4c3b867e02ae62b613b73b7

deliverables/yoga/keystone.yaml

@@ -5,3 +5,11 @@ team: keystone
 type: service
 repository-settings:
   openstack/keystone: {}
+releases:
+  - version: 21.0.0.0rc1
+    projects:
+      - repo: openstack/keystone
+        hash: 0eba22f331f5e998d5cdee2039e8f14772e78e5e
+branches:
+  - name: stable/yoga
+    location: 21.0.0.0rc1