Merge pull request #27 from pulp/mhrivnak-1114771

1114771 - handling slight variation in docker's image metadata scheme
Spec file for pulp-docker

This will create three RPMs:

python-pulp-docker-common
pulp-docker-admin-extensions
pulp-docker-plugins

Note that after merging, I'll need a `tito init` directly against master to set
up tags. This will also fill in the %changelog.
Merge pull request #28 from beav/spec

Spec file for pulp-docker
Initialized to use tito.
Automatic commit of package [pulp-docker] release [0.1.1-1].
WIP
Merge remote-tracking branch 'origin/master' into mhrivnak-sync
WIP
WIP