Adds pushTag to puppet-manager-core

  This commit will add pushTag on refs/tags/* for puppet-manager-core which
  will apply to all stackforge hosted puppet modules.  This is to allow
  for the tagging of releases of the upstream stackforge modules to the
  Puppet Forge.

Change-Id: I1b4a05f61edb10a11cb156fce49a863bb2101378
Reviewed-on: https://review.openstack.org/33762
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins