fixed invalid priority value in class rofl_ofdpa_fm_driver methods add_bridging_unicast_vlan() and remove_bridging_unicast_vlan():
fixed invalid priority value in class rofl_ofdpa_fm_driver methods
add_bridging_unicast_vlan() and remove_bridging_unicast_vlan():

error description:
- packets match on the "Table miss" flow mod entry in table "Bridging", although
  a "Unicast VLAN" entry for the specified host already exists

reason:
- priority value for "Table miss" and host specific flow mod entry share the
  same value "2"

resolution: OF-DPA specification 3.04, section 4.1.17.1 and associated TTP json file
- corrected priority value for flow mods of type "Unicast VLAN"
  in table "Bridging", old value: 2, new value: 3

bisdn/rofl-ofdpa,bisdn/rofl-ofdpa,bisdn/rofl-ofdpa,bisdn/rofl-ofdpa