started delete_events
pep8 fixes
fixing pip references
removing unnecessary pep8 command from makefile
deleting based on policy_id
Merge branch 'master' into delete_schedule_event
delete_events takes list of policy ids

also, removed few unnecessary setup in tests
Add a function that filters out deleted rows
Change naive_list_policies to filter deletes on model side
Change list_states to filter deletes on model side
_grab_list no longer used
using params instead of expanding cql in code
Change naive_list_webhooks to filter deletes on model side
values dict should not have ':'
Real delete one webhook
Real delete one policy and all its webhooks
Real delete scaling group
silverberg is now available in pypi
updating to testtools 0.9.32
addressed ying's comments