If the guest address is unavailable via Hyper-V inspection, extract
MAC address of network adapters and check neighbor information for
any currently matching known address.
+ This disambuguates calls to the Hyper-V functions for the Hyper-V provider.
The ambiguity of some commands - such as `Get-VM` - causes the Hyper-V provider
to fail on systems where VMware PowerCLI is installed. This change ensures that
all calls to Hyper-V specific cmdlets or functions are prepended by `Hyper-V\`.
This ensures the correct cmdlet calls are being made.
+ Resolves #8862.
Powershell helper script now returns error when guest IP address
cannot be discovered. When reading addresses from a network
device both IPv4 and IPv6 are stored and the IPv4 address has
precedence on returned address.
