Switch from FLAGS to CONF in misc modules

Use the global CONF variable instead of FLAGS. This is purely a cleanup
since FLAGS is already just another reference to CONF.

We leave the nova.flags imports until a later cleanup commit since
removing them may cause unpredictable problems due to config options not
being registered.

Change-Id: Ib110ba8d1837780e90b0d3fe13f8e6b68ed15f65

nova/manager.py

@@ -55,6 +55,7 @@ This module provides Manager, a base class for managers.
 
 import eventlet
 
+from nova import config
 from nova.db import base
 from nova import flags
 from nova.openstack.common import log as logging
@@ -63,10 +64,7 @@ from nova.openstack.common.rpc import dispatcher as rpc_dispatcher
 from nova.scheduler import rpcapi as scheduler_rpcapi
 from nova import version
 
-
-FLAGS = flags.FLAGS
-
-
+CONF = config.CONF
 LOG = logging.getLogger(__name__)
 
 
@@ -139,7 +137,7 @@ class Manager(base.Base):
 
     def __init__(self, host=None, db_driver=None):
         if not host:
-            host = FLAGS.host
+            host = CONF.host
         self.host = host
         self.load_plugins()
         super(Manager, self).__init__(db_driver)
@@ -215,8 +213,8 @@ class Manager(base.Base):
 
     def service_config(self, context):
         config = {}
-        for key in FLAGS:
-            config[key] = FLAGS.get(key, None)
+        for key in CONF:
+            config[key] = CONF.get(key, None)
         return config