Fix deletion of powered off vApp
Fix deletion of powered off vApp

Right now trying to delete a vApp with no VMs or a powered off vApp ends
up with

The attempted operation cannot be performed in the current state (Powered off).

errors.

bruceadowns/govmomi,vmware/govmomi,jrmycanady/govmomi,bruceadowns/govmomi,caglar10ur/govmomi,dougm/govmomi,cgtexmex/govmomi,vmware/govmomi,bruceadowns/govmomi,mevansam/vsphere-govmomi,casualjim/govmomi,cgtexmex/govmomi,jrmycanady/govmomi,casualjim/govmomi,dougm/govmomi,mevansam/vsphere-govmomi,vmware/govmomi,dougm/govmomi,caglar10ur/govmomi,frapposelli/govmomi,mevansam/vsphere-govmomi,austinlparker/govmomi,casualjim/govmomi,frapposelli/govmomi,austinlparker/govmomi,jrmycanady/govmomi,cgtexmex/govmomi,austinlparker/govmomi,frapposelli/govmomi,caglar10ur/govmomi