unit test for ofctl_v1_2/3

Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofctl_v1_2/3: fix tcp_dst/src match fields

when enclosed the value of "ip_proto" in double quotes,
following match fields is not set at mod_flow_stats command:

  * tcp_dst, tcp_src

this patch fixes this problem.

Reported-by: jalee <jalee@inno-tech.com.tw>
Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofctl_v1_2/3: fix unsuitable log

when using action type below, the log unsuitable is outputted:
Unknown action type: [action type]

  * GOTO_TABLE, WRITE_METADATA, METER(only ofctl_v1_3.py)

this patch fixes this problem.

Reported-by: jalee <jalee@inno-tech.com.tw>
Signed-off-by: Minoru TAKAHASHI <takahashi.minoru7@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>