[congress] final releases for pike

This is a procedural review to tag a final release for each deliverables ; and

It's possible that the release isn't needed (for example if there are no code
changes sine the previous release, sadly that's non-trivial to detect en masse.

If you are the PTL or release liaison for this team please +1 this review
if it is ready or -1 and take over the review to correct mistakes.

Change-Id: Idaf4a92fb17162c75006fec19385d9985fea5126

deliverables/pike/python-congressclient.yaml

@@ -13,6 +13,10 @@ releases:
     projects:
       - repo: openstack/python-congressclient
         hash: e2baac279652ce53d39f1b0953c731a77c189faa
+  - projects:
+      - hash: 5c64747b1561b48a47ddd21505b140e9fd6a6cf5
+        repo: openstack/python-congressclient
+    version: 1.8.1
 branches:
   - name: stable/pike
     location: 1.8.0