Release final python-keystoneclient for Xena

This proposed a release for python-keystoneclient to get any final merged
changes out prior to the lib freeze for Xena 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, September 17.

$ git log --oneline --no-merges 4.2.0..d5cb761

Signed-off-by: Hervé Beraud <hberaud@redhat.com>
Change-Id: I89fa34833637844c0653bc3ff3ed6d946db61774

deliverables/xena/python-keystoneclient.yaml

@@ -6,3 +6,11 @@ team: keystone
 type: client-library
 repository-settings:
   openstack/python-keystoneclient: {}
+releases:
+  - version: 4.3.0
+    projects:
+      - repo: openstack/python-keystoneclient
+        hash: d5cb761763988217cdd00a7981a62e2083fd381f
+branches:
+  - name: stable/xena
+    location: 4.3.0