rest_router: fix OFPSetAsync bit mask

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofctl_v1_2:support whole of match fields

Hi,

I tried to support for whole of match field with ofctl_v1_2.(same as ofctl_v1_3)
Also, changed table_id of get_flow_stats method from fixed 0 to OFPTT_ALL for enable to select arbitrary table_id by client side.

Thank you.

Signed-off-by: Kiyonari Harigae <lakshmi@cloudysunny14.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>