returns the vapp_id instead of true
memory is an integer
Conflicts:
	lib/fog/vcloud_director/models/compute/vm.rb
adding ready? method
Conflicts:
	lib/fog/vcloud_director/models/compute/vm.rb
accessing to the parent vapp even if the vm is orphan (query result)
Conflicts:
	lib/fog/vcloud_director/models/compute/vm.rb
[vcloud_director] fix vapp#suspend