pep8 fixes
fixing pip references
removing unnecessary pep8 command from makefile
silverberg is now available in pypi
updating to testtools 0.9.32
refactored group system tests & changed string formatting
fixed few tests
added test for delete oldest active server when scaled down
formatting made backward compatible
fixed per reviews
changes per reviews
specified sp_change in doctrings
rebasing on upstream
pep8 fixing a few more files
changed docstring on test
Merge pull request #232 from rackerlabs/system_group_refactor_1

refactor_cloudcafe_1
Merge pull request #227 from galstrom21/pep8_fixes

Pep8 and requirements.txt fixes
Merge branch 'master' into auto_377_there_otter_be_an_otterclock