updated repo constants
Merge pull request #1334 from sghai/update-repo-constant

Updated repository url's under GPGKey tests with fake repo constants
Test "auth_source_ldaps" API paths

Flesh out the `AuthSourceLDAP` class and add this class to module
`test_multiple_paths`. Reference bugzilla bug 1140313 ("Cannot read an auth
source ldap's host via the API") in the updated test suite.