Redis: Mount certificates on TLS proxy
Redis: Mount certificates on TLS proxy

We were mounting the TLS certificates on the redis container and not on
the proxy itself.

Change-Id: I52c53103362371ea1a82130e1ee48fef2d194bed
Closes-Bug: #1787959

dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates,dprince/tripleo-heat-templates