I have already spent more time on this than I dare to admit.
It seems like a fairy straight forward thing, install PowerCli 6.
The only official thing I could find was on PowerCli 5, maybe it’s different.
Here is what I have so far.
$powerCli = C:\Users\me\Downloads\PowerShell\PowerCLI\VMware-PowerCLI-6.0.0-3205540.exe
& $ENV:ComSpec /c $powerCli /s /v /qn