Create a job to build teuthology docs and deploy them

I took the xml file for the ceph-deploy-docs job and tried to use it as a reference for creating this job.  I suspect I've gotten a few things incorrect here, but it's a starting point anyway.

A couple things I worry about:

* I don't believe that the ceph.com/teuthology/docs directories exist.  Will that rsync command fail if those directories don't exist?
* The teuthology docs currently do not have an index.rst.  Will contents.rst be served out instead?
* Would it be better to build docs on every push to master?  Currently this would only build docs with manual intervention.

Thanks for taking a look.

Signed-off-by: Andrew Schoen <aschoen@redhat.com>