If there are a lot of Review Bot worker it will be

very expensive to maintain a repository configuration

manually. Since a reviewboard instance already knows

the configuration it is now be possible to configure

multiple reviewboard instances and let the Review Bot

fetch git and hg repositories automatically.
If a repository has a "path" or "mirror_path" that

can be access locally or has a scheme starting with

"http" or "git" it will be added to known repository.

Added some repositories in reviewboard with path

and mirror_path. Some with non-existing local path

and mirror_path with "http" scheme.
Saw that the Review Bot finds all accessible

repositories are added correctly.
Tested with and without authentication.