The repository creation form advertises Power Pack's hosting services,

using fake versions of the hosting services for display. To do this, we

have a mapping of hosting service class paths to fake hosting services.
Power Pack 7 will update the class path for the Bitbucket Server hosting

service. This change updates the fake hosting services mapping to account

for this, otherwise a duplicate entry for Bitbucket Server would appear

in the hosting services choices when creating a repository. Instead of

using class paths in the mapping we use hosting service IDs, which will

show the right hosting services regardless of the Power Pack version,

and regardless of whether any more of their class paths change in the

future.

Ran unit tests.
Saw that there was no longer a duplicate entry in the hosting services

  choices.
Tested with Power Pack 5 and 6.