Description of problem:
When there is an error and the creation of a VM on RHEV needs to be rolled back, Satellite attempts to do this, but fails if the disks for the VM haven't been completely created yet.

My storage is slow, so I have this happen all the time, but if you would create a VM on fast storage with large preallocated disks, I can imagine this happening too.

Error message:

Failed to destroy a compute RHEV (RHEV) instance rhev-test-01.vm.thuisnet.lan: Cannot remove VM: The following disks are locked: rhev-test-01-vm-thuisnet-lan_Disk1. Please try again in a few minutes.

Not sure whether to file this as RHEV or Satellite bug, tbh.

Version-Release number of selected component (if applicable):
6.1.3

How reproducible:


Steps to Reproduce:
1. Fill in 'New host' page to deploy on RHEV
2. Make intentional error in IP address for example
3. 

Actual results:
VM is created, but roll back fails: VM is not removed due to the above error

Expected results:
VM is created, and roll back (VM removal) succeeds

Additional info:
Either Satellite needs to retry if this happens, or RHEV needs to be able to schedule the deletion for after the disks are created.