Merge pull request #105 from unwin/develop

Cleaned up before/after methods after listInternetGateway test was
added support for testing volume add via alterVM
fw tests should check vm and fw requirements for vlans
added checks to attachVolume
Merge remote-tracking branch 'upstream/develop' into develop
Merge pull request #108 from daniellemayne/develop

Develop: vm, volume and fw test improvements
test mods
Merge pull request #109 from unwin/develop+RDS

test mods
added coreos
Merge pull request #110 from unwin/develop+coreos

added coreos
test