Fix for "missing walrus" case when using OSG+RIAK

Change-Id: I7c48eb0ab15d814591c98f9760c1f91522b0d542
Fix up for use by EDGE mode networking.

Change-Id: Ie7578ee4957811a00485dd1681e58668b85ecc52
Do not use windows or loadbalancer images in instancetest

Change-Id: Ifb768d252e62ebbd5e208a9ecb30fde75a8fa6bc
PEP 8 for instancetest

Change-Id: I0ad74313e40a4d96d491a19e718e686ff8c8b24a
Makes euservice support active-active components as enumerated in euservice.active_active_service_types list.
Merge branch 'testing' of github.com:eucalyptus/eutester into eucalyptus-testing

Conflicts:
	eutester/euservice.py
Merge pull request #229 from zhill/testing

Merge in changes for active-active service types, specifically osg