Fixed issue where stopping a stack fails due to a new format in the salt-cloud query results
Added filters to most list endpoints
Added filter to the provider security groups endpoint
Found the actual problem with the salt-cloud query results, fixed here
Added a couple pylint things
Forgot to ignore migrations in testing pylint, need to specify exclude in .travis.yaml for pep8
Merge pull request #141 from clarkperkins/develop

Filters for list endpoints / salt-cloud query result compatibility