Release python-novaclient 2.29

Various fixes relating to being defensive when people use the client in
unexpected ways, including defaulting v2.Client to v2.0 API version.

Given the addition of a deprecation warning, I have incremented the
minor version.

There was also a bug fix to help with bdm code sending incorrect
requests, causing a 400 error when using API v2.1

Change-Id: I0848e7328cf62ea0872e9e9473d823735f65f16a

deliverables/liberty/python-novaclient.yaml

@@ -36,3 +36,10 @@ releases:
         hash: 9e15b3d7c07d605947b8e712e36d982a0e14fb90
     highlights: >
         Fix quota-update bug when using v2.1 API.
+  - version: 2.29
+    projects:
+      - repo: openstack/python-novaclient
+        hash: 31d4e026b447bfac43fa943176b353fcfd2800d8
+    highlights: >
+        Deprecate novaclient.client.get_client_class and
+        default v2.Client to use v2.0 when no version is given.