Specify testDataCenterId, and use it for creating vm's for tests.
modified StatefulImageTests so testVMwould get created.
more changes to utilize testDataCenterId
Added fallback from if system property test.dataCenter does not exist,
it should try the old method: 
testDataCenterId =
tm.getProvider().getDataCenterServices().listDataCenters(tm.getContext().getRegionId()).iterator().next().getProviderDataCenterId();
Missed one...
Fixes for tests failing for some regions, but noth others.
Some formatting corrections made it in as well. whoops.
Fix merge
Merge branch 'unwin-develop' into develop
Added StatelessImageDests.RemoveMachineImage to verify custom images can
be removed. requires a image be manually created first. test is
commented out to prevent being run until needed.
Fix for removeLoadBalancer test leaking a health check, as it was
created in error.
Merge pull request #83 from unwin/develop

Added StatelessImageDests.RemoveMachineImage
Merge remote-tracking branch 'upstream/develop' into develop