Added missing plugin .ini files to setup.cfg

Some plugin .ini configuration files were missing and hence not
installed via 'setup.py install'.

Conflicts:
	setup.cfg

Change-Id: I31f096e7fbf9f7a182ba8535ca8cadc4fecc6632
Partial-Bug: 1324487
(cherry picked from commit a75e156af64afb61f3ebf928eda132325e5a46f5)
Merge branch 'stable/havana' of https://github.com/openstack/quantum into havana/stable