sdn_sensor.c: enable RSS, update rx_conf and tx_conf for DPDK 2.2
sdn_sensor.c: enable RSS, update rx_conf and tx_conf for DPDK 2.2

megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor,megahall/sdn_sensor