Use async version of rimraf for tests.

This should help reduce the EPERM errors on Windows.
Avoid initializing git for smoke tests.
Trim response text before comparing.
Merge pull request #2027 from rwjblue/use-rimraf-async

Windows Test Fixes - Part 5791
added pod blueprints and tests
Updated blueprints and pods initializer tests
cosmetic fixes for blueprint model
podModulePrefix now pulled from config/environment, __test__ now adds -test to token value
updated rimraf to be windows friendly as per #2027
added fileMapTokens documentation