Publish troveclient documentation

Publish python-troveclient on docs.openstack.org like all
python-PROJECTclients. This means: A new document gets published
whenever a new client gets released.
Use python-jobs template and remove all jobs that are part of the
template, add openstack-client-publish-jobs for publishing.

The jobs already exists in Jenkins, wire them into Zuul now.

Change-Id: Ice07e5e034a3433db290d1f2b98b9a006b782f55
Partial-Bug: #1315101
Merge "Publish troveclient documentation"