Adding cisco-n1kv support in astapor/foreman

I have made changes which required in foreman to install cisco nexus1000v plugin. I validated my changes with ICE HOUSE RDO in RHEL 7 controller and ICE HOUSE RDO in RHEL6.5
I am a little concerned about adding external repos this way.  Perhaps there could be a 'use_supplemental_repos' flag or something?