Don't pull updates for repositories marked as hosted

Summary:

• Don't try to pull hosted repos.
• Also, fix the --verbose + --trace interaction for bin/repository.
• Also, fix a couple of unit tests which got tweaked earlier.

Test Plan:

$ ./bin/repository pull GTEST --verbose
Pulling 'GTEST'...
Repository "GTEST" is hosted, so Phabricator does not pull updates for it.
Done.

Reviewers: btrahan, hach-que

Reviewed By: hach-que

CC: aran

Maniphest Tasks: T2230

Differential Revision: https://secure.phabricator.com/D7427