Salt-cloud: Fix Proxmox VM deletions
Prior to this change, it was using the wrong ID (concatted id + tech) while there is one that is pre-concatted so using that instead now.
Also, the VM needs to be stopped prior to being deleted. The VM is now being stopped and checked whether its in this state before it proceeds
Merge pull request #14965 from syphernl/fix/proxmox_deletes

Salt-cloud: Fix Proxmox VM deletions