[aws|auto_scaling] Add PlacementTenancy attribute for launch configuration
Merge pull request #3296 from benpillet/aws/autoscaling/placement_tenancy

[aws|auto_scaling] Add PlacementTenancy attribute for launch configurati...
Disable rackspace until fog-rackspace#10 is fixed.
Merge pull request #3298 from icco/disable-rackspace

Disable rackspace until fog-rackspace#10 is fixed.