Add support for listening on Hyper-V sockets
Add support for listening on Hyper-V sockets

Previously we only supported connecting to Hyper-V sockets because
old version of Windows would sometimes bluescreen while accepting
connections. All supported versions of Windows 10 work correctly
so this patch defines a new URL scheme

  hyperv-listen://vmid/serviceid

which runs a standard listen / accept loop.

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@docker.com>

djs55/vpnkit,djs55/vpnkit,djs55/vpnkit