Reformat openstack-common.conf

Use the new 'module' option in openstack-common.conf which is a
multi-string option, allowing each module name to be placed on a
separate line.

This makes it much easier to review changes to the modules list.

Change-Id: I64dff89639f9d136ded3d25aab9f8f85a2d7112b

openstack-common.conf

@@ -1,5 +1,30 @@
 [DEFAULT]
-# The list of modules to copy from openstack-common
+# The list of modules to copy from oslo-incubator.git
-modules=context,eventlet_backdoor,exception,excutils,fileutils,gettextutils,importutils,install_venv_common,jsonutils,local,lockutils,log,loopingcall,network_utils,notifier,periodic_task,policy,processutils,rpc,service,setup,threadgroup,timeutils,uuidutils,version
+module=context
+module=eventlet_backdoor
+module=exception
+module=excutils
+module=fileutils
+module=gettextutils
+module=importutils
+module=install_venv_common
+module=jsonutils
+module=local
+module=lockutils
+module=log
+module=loopingcall
+module=network_utils
+module=notifier
+module=periodic_task
+module=policy
+module=processutils
+module=rpc
+module=service
+module=setup
+module=threadgroup
+module=timeutils
+module=uuidutils
+module=version
+
 # The base module to hold the copy of openstack.common
 base=quantum