New Update with ESXi 6.5/6.7/7.0 Support

Updated Cody's script located here:
https://github.com/codyhosterman/powercli/blob/master/bestpracticechecker.ps1

Updated check for correct Disk Max IO Size (per ESXi version)
Updated check for SATP rule (per ESXi version)
Updated to support PowerCLI Core (win/lin/mac)

Author: jasemccarty