ofctl_v1_3: correct the output result of get_flow_stats()

the previous version of ofctl_v1_3 was inconsistent with ofctl_v1_0 and ofctl_v1_2 in the output result of get_flow_stats().

 - ofctl_v1_0/ofctl_v1_2
    'match': {
        'dl_type': 2048,
        'nw_dst': '10.0.2.0/24'
    }

 - ofctl_v1_3
    'match': {
        'OFPMatch': {
            'type': 1,
            'length': 22,
            'oxm_fields': [
                {
                    'OXMTlv': {
                        'field': 'eth_type',
                        'mask': None,
                        'value': 2048
                    }
                },
                {
                    'OXMTlv': {
                        'field': 'ipv4_dst',
                        'mask': '255.255.255.0',
                        'value': '10.0.2.0'
                    }
                }
            ]
        }
    }

this patch changes the output of ofctl_v 1_3 like other libraries.

Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
ofctl_v1_3: support some actions

Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
rest_firewall: support OF 1.3

Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>