this patch fixes the following bugs:
- "SET_FIELD" action caused an exception at mod_flow_entry command.
- following match fields caused an exception at get_flow_stats command:
* mpls_label, arp_spa, arp_tpa
- following fields in "SET_FIELD" were displayed as classes:
* eth_dst, eth_src, vlan_vid, mpls_label
- "arp_spa" and "arp_tpa" were not displayed as IPv4 address
Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>