Update jobs for zaqar

For zaqar:
Use openstack-server-publish-jobs template for publishing.
Remove zaqar-branch-tarball from post since it's part of python-jobs.
Use pypy-jobs template.

For python-zaqarclient:
Use pypy-jobs template.

Change-Id: I45ea57e0bc22b886639df3874e0dc557d48e9a45
Merge "Update jobs for zaqar"