Add checks in GetRepoData
Add checks in GetRepoData

GetRepoData should only be called by a job task prior to extending
the namespace, and these checks enforce that. This makes potential
decrypted secrets in repositories.yaml a little less leaky.

uva-its/gopherbot,parsley42/gopherbot,parsley42/gopherbot,parsley42/gopherbot,uva-its/gopherbot,uva-its/gopherbot,uva-its/gopherbot,parsley42/gopherbot