print the expected rps mask for physical and virtual network devices.
This change would help with debugging the test in case of failure.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>

Printing the rps masks in case of failure is more readable then printing the cpuset.
this is because an empty mask i.e 0000 is interpeted as an empty cpuset i.e "" (empty quotes)

Signed-off-by: Talor Itzhak <titzhak@redhat.com>

In case the test failed, we asserts only the desired and actual mask,
but we are not specifing the device on which the RPS mask was bad.

This patch adds the full device path as part of the error message.

Signed-off-by: Talor Itzhak <titzhak@redhat.com>