Ensure all Neutron LoadBalancer members are deleted

Previously we only deleted the ones listed in the template, even though
members can be added by autoscaling that don't appear in the template. In
theory this is OK if we're deleting the autoscaling group too, and since
it's not possible to update the LoadBalancer property on an autoscaling
group I can't find a way to actually trigger any bug (hence no new test).
However, it's much safer to ensure we delete all of the remaining members
when we delete the LoadBalancer resource.

Change-Id: I6f1c02ae408e9169a23ae32e7fce5ea0d2239add
Closes-Bug: #1310602
Update api docstrings to match guidelines

Per http://docs.openstack.org/developer/hacking/
and http://www.python.org/dev/peps/pep-0257/

Change-Id: I33f03d784996e298ebd94aabec93e5083b5df840
Remove vim headers

No need to set tabstop tons of times, this can be set in your vimrc
file instead.

Closes-Bug: #1229324

Change-Id: Ib859c0af8a29437540a0586dc0af77bb544ece23
Merge "Update api docstrings to match guidelines"
Merge "Remove vim headers"
Merge "Ensure all Neutron LoadBalancer members are deleted"