The "enforcement" of contributed checks being able to report into a fixed list of top level namespaces will be in libtaskotron. While not foolproof, we're assuming no malicious activity on the part of users.

This will need:
* Determining if the current check is a git checkout and where it's from
* configurable values for a repo location "whitelist" and a set of top level namespaces for which the whitelist isn't required
* check the destination namespace(s) and repo location before sending results to resultsdb, warn if reporting is not enabled