[rackspace|compute] switching default compute provider to Fog::Compute::RackspaceV2
Merge branch 'master' of github.com:fog/fog into default_v2
Merge branch 'master' of github.com:fog/fog into default_v2
[rackspace|compute_v2] fixing broken tests
Merge pull request #2116 from rackspace/default_v2

[Rackspace|Compute] Make Next Gen Servers the default server implementation for Rackspace