https://fercorrales.com/parallel-execution-with-psjobs-and-powercli-deploying-new-vms/
https://communities.vmware.com/t5/VMware-PowerCLI-Discussions/global-DefaultVIServers-and-get-the-result-from-vcenters-that-i/td-p/504548
https://wahlnetwork.com/2015/12/16/using-previously-connected-vcenter-sessions-with-powercli/