Updates for automatic triggering of policies

* Switch policy router queue to not be "tower" so that we don't
  fall into a chicken/egg scenario
* Show fixed policy list in serializer so a user can determine if
  an instance is manually managed
* Change IG membership mixin to not directly handle applying topology
  changes. Instead it just makes sure the policy instance list is
  accurate
* Add create/delete hooks for instances and groups to trigger policy
  re-evaluation
* Update policy algorithm for fairer distribution
* Fix an issue where CELERY_ROUTES wasn't renamed after celery/django
  upgrade
* Update unit tests to be more explicit
* Update count calculations used by algorithm to only consider
  non-manual instances
* Adding unit tests and fixture
* Don't propagate logging messages from awx.main.tasks and
  awx.main.scheduler
* Use advisory lock to prevent policy eval conflicts
* Allow updating instance groups from view

awx/settings/defaults.py

@@ -432,6 +432,7 @@ DEVSERVER_DEFAULT_PORT = '8013'
 # Set default ports for live server tests.
 os.environ.setdefault('DJANGO_LIVE_TEST_SERVER_ADDRESS', 'localhost:9013-9199')
 
+BROKER_POOL_LIMIT = None
 CELERY_BROKER_URL = 'amqp://guest:guest@localhost:5672//'
 CELERY_EVENT_QUEUE_TTL = 5
 CELERY_TASK_DEFAULT_QUEUE = 'tower'
@@ -452,7 +453,7 @@ CELERY_TASK_QUEUES = (
 )
 CELERY_TASK_ROUTES = {}
 
-CELERYBEAT_SCHEDULE = {
+CELERY_BEAT_SCHEDULE = {
     'tower_scheduler': {
         'task': 'awx.main.tasks.awx_periodic_scheduler',
         'schedule': timedelta(seconds=30),
@@ -1123,9 +1124,11 @@ LOGGING = {
         },
         'awx.main.tasks': {
             'handlers': ['task_system'],
+            'propagate': False
         },
         'awx.main.scheduler': {
             'handlers': ['task_system'],
+            'propagate': False
         },
         'awx.main.consumers': {
             'handlers': ['null']