ja: rest_qos: Fix meter type to reflect OpenFlow Specification

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
ja: rest_qos: Remove redundant descriptions and warning messages

Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Merge branch 'ja/rest_qos/Fix_meter_type'