Add new options to nettest to specify device binding and expected
device binding for server mode, and update fcnal-test script. This
is needed to allow a single instance of nettest running both server
and client modes to use different device bindings.
Signed-off-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>