Added simple Vello NICs page

Change-Id: I271ff82a3acb204894743065b1c6903b35f01711
Added apply action for vello screen

Change-Id: I8689feca5131eaca6794d63c9dec2483355e8a6e
Final implementation of vello i-face config

Change-Id: I0ed98bc9c6524d6966131c517414ccd33e341d41