Rabbitmq won't talk to us anymore if we try to use SSLv3 as it disabled
support for SSLv3. Openstack components use python's openssl
implementation which does not support TLSv1.1 and TLSv1.2 yet so we
just switch to TLSv1. Support for newer TLS should come with python
2.7.9+
Closes-Bug: #1409667
Change-Id: Id12adbc7f75940b2f6bd01e6080c853b15cf2116