Convert Faking/Failing mechanism to new Configuration value

Converted Bamboo faking mechanism away from parsing out the GET param… …
…s into using a new Configuration value: addFakeRequest and addFailRequest.

Lots of changes to the tests to use the new format.
Fail fixtures seem to inherently rely on having a file available. It is used in 1 place I think, and it'd take a lot of refactoring to make the Fail client work any differently so I was going to leave it as is.