Cleanup LBs when Octavia times out.

Created by: garloff

In gx-scs currently, the Loadbalancer service is extremely slow. When createing the LB instance (with two amphorae), we time out in the creation API call (which does NOT wait for them to become active). So we end up testing without the LB test. However, the LBs eventually come up and we fail to expect this and fail to clean up. So more and more LBs are hanging around until the 200 iterations are over. We also fail to cleanup networks by consequence.

Change this: In cleanup, if LBs are enabled at all, but there were errors, looks for LBs and try to delete them. So we stop collecting them and also avoid failed network and router cleanup.