Release castellan for wallaby-1 milestone

This is a library release for castellan for the wallaby-1
milestone. This repo includes commits that have not been releases for
this cycle yet.

If the team is ready to process with this release, please leave a +1
to indicate we should go ahead with the release.

If the team needs more time for things about to merge, or if there is
some other reason a release should not be done at this time, please
leave a -1 with a comment indicating the status. Then update the patch
with the new commit hash to use once the team is ready to do the
release.

Change-Id: I72385fcef188ca50bd3babaec5ae57c173c9fa5c

deliverables/wallaby/castellan.yaml

@@ -5,3 +5,8 @@ type: library
 release-model: cycle-with-intermediary
 repository-settings:
   openstack/castellan: {}
+releases:
+  - version: 3.7.0
+    projects:
+      - repo: openstack/castellan
+        hash: aede0861dee800c0e9fb8a0ee79b91795941bdce