Openstack cloud and remove google class restrictions

Removing the class restrictions of GAE and support the usage on Openstack (update the appscale-tools too) 
Make sure no lines go past 80 characters. Run pytlint on the code:
pylint --indent-string '  ' file_name.py

Use .format instead of adding strings together:
self.handle_failure("Unknown scheme in ... {0}, expected it to be like ...".format(result.scheme))