updating documentation
(#16668) added windows network spec helper
maint: adding lib to spec path in spec helper

 This is the same behavior that is in puppet.
(#16668) only include win nics in bindings

 This ensures that only nics that are in the bindings for ipv4/ipv6 are checked
   against the registry bindings
maint: update specs to use windows_network spec helper

 This updates the network specs in windows to use the spec helper thus reducing
   quite a bit of repetition in examples and spec files.
maint: removed fixture for windows netsh

 As we are no longer using netsh on windows we are no longer using this fixture.