sw test tool: Add default test files (queue)

These test files aim to examine 'set-queue action' of FlowMod message.

Signed-off-by: WATANABE Fumitaka <watanabe.fumitaka1@gmail.com>
Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>
sw test tool: support fluctuations of sending

Signed-off-by: Yuichi Ito <ito.yuichi0@gmail.com>