test tool: add a script to make the test environment on mininet
test tool: add a script to make the test environment on mininet

What this patch implements:

    This patch implements a script that provides the simple test environment that includes 2 switches and 2 links for the test tool as follows:

                      +-----------+
           +----------| target sw | The OpenFlow switch to be tested (Open vSwitch)
           |          +-----------+
    +------------+      (1)   (2)
    | controller |       |     |
    +------------+      (1)   (2)
           |          +-----------+
           +----------| tester sw | OpenFlow Switch (Open vSwitch)
                      +-----------+

      (X) : port number

How to run:

    Do the following command:
    sudo ryu/tests/switch/run_mininet.py

    And then, run the test tool at another terminal:
    ryu-manager ryu/tests/switch/tester.py

Signed-off-by: Yuichi Ito <7a83edf5b53f0b21d4182a3da7518164ce03dc3a@gmail.com>
Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

castroflavio/ryu,umkcdcrg01/ryu_openflow,ysywh/ryu,yamt/ryu,muzixing/ryu,evanscottgray/ryu,gareging/SDN_Framework,ynkjm/ryu,takahashiminoru/ryu,torufuru/oolhackathon,Zouyiran/ryu,ynkjm/ryu,TakeshiTseng/ryu,haniehrajabi/ryu,sivaramakrishnansr/ryu,ysywh/ryu,mikhaelharswanto/ryu,habibiefaried/ryu,openvapour/ryu,takahashiminoru/ryu,pichuang/ryu,zangree/ryu,zyq001/ryu,lzppp/mylearning,darjus-amzn/ryu,Tejas-Subramanya/RYU_MEC,jazzmes/ryu,fkakuma/ryu,darjus-amzn/ryu,torufuru/OFPatchPanel,lzppp/mylearning,takahashiminoru/ryu,Tejas-Subramanya/RYU_MEC,ntts-clo/mld-ryu,lsqtongxin/ryu,lagopus/ryu-lagopus-ext,elahejalalpour/ELRyu,StephenKing/summerschool-2015-ryu,OpenState-SDN/ryu,lzppp/mylearning,OpenState-SDN/ryu,ntts-clo/ryu,Tejas-Subramanya/RYU_MEC,Tesi-Luca-Davide/ryu,torufuru/OFPatchPanel,habibiefaried/ryu,diogommartins/ryu,gopchandani/ryu,gareging/SDN_Framework,shinpeimuraoka/ryu,Tejas-Subramanya/RYU_MEC,openvapour/ryu,sivaramakrishnansr/ryu,OpenState-SDN/ryu,StephenKing/summerschool-2015-ryu,castroflavio/ryu,fkakuma/ryu,Zouyiran/ryu,gopchandani/ryu,muzixing/ryu,jalilm/ryu,yamt/ryu,jazzmes/ryu,jkoelker/ryu,alanquillin/ryu,elahejalalpour/ELRyu,StephenKing/ryu,zyq001/ryu,John-Lin/ryu,John-Lin/ryu,haniehrajabi/ryu,alyosha1879/ryu,Tesi-Luca-Davide/ryu,iwaseyusuke/ryu,Tejas-Subramanya/RYU_MEC,hisaharu/ryu,ttsubo/ryu,fujita/ryu,pichuang/ryu,ynkjm/ryu,diogommartins/ryu,ysywh/ryu,zyq001/ryu,sivaramakrishnansr/ryu,muzixing/ryu,alanquillin/ryu,lsqtongxin/ryu,John-Lin/ryu,elahejalalpour/ELRyu,openvapour/ryu,openvapour/ryu,fujita/ryu,darjus-amzn/ryu,Zouyiran/ryu,habibiefaried/ryu,pichuang/ryu,jalilm/ryu,TakeshiTseng/ryu,umkcdcrg01/ryu_openflow,gareging/SDN_Framework,lsqtongxin/ryu,yamada-h/ryu,jkoelker/ryu,StephenKing/summerschool-2015-ryu,shinpeimuraoka/ryu,yamt/ryu,Tesi-Luca-Davide/ryu,diogommartins/ryu,jkoelker/ryu,torufuru/oolhackathon,lagopus/ryu-lagopus-ext,ysywh/ryu,iwaseyusuke/ryu,elahejalalpour/ELRyu,diogommartins/ryu,TakeshiTseng/ryu,lsqtongxin/ryu,takahashiminoru/ryu,John-Lin/ryu,StephenKing/summerschool-2015-ryu,gopchandani/ryu,lzppp/mylearning,o3project/ryu-oe,haniehrajabi/ryu,darjus-amzn/ryu,yamada-h/ryu,openvapour/ryu,alanquillin/ryu,lagopus/ryu-lagopus-ext,jazzmes/ryu,gopchandani/ryu,StephenKing/ryu,OpenState-SDN/ryu,fkakuma/ryu,yamt/ryu,fkakuma/ryu,torufuru/oolhackathon,lsqtongxin/ryu,alanquillin/ryu,alanquillin/ryu,osrg/ryu,gareging/SDN_Framework,muzixing/ryu,castroflavio/ryu,haniehrajabi/ryu,iwaseyusuke/ryu,Zouyiran/ryu,StephenKing/ryu,TakeshiTseng/ryu,osrg/ryu,ttsubo/ryu,sivaramakrishnansr/ryu,hisaharu/ryu,habibiefaried/ryu,osrg/ryu,Tesi-Luca-Davide/ryu,ntts-clo/mld-ryu,jalilm/ryu,yamt/ryu,umkcdcrg01/ryu_openflow,darjus-amzn/ryu,shinpeimuraoka/ryu,alyosha1879/ryu,muzixing/ryu,iwaseyusuke/ryu,ynkjm/ryu,o3project/ryu-oe,haniehrajabi/ryu,gopchandani/ryu,zangree/ryu,osrg/ryu,OpenState-SDN/ryu,elahejalalpour/ELRyu,fujita/ryu,takahashiminoru/ryu,lagopus/ryu-lagopus-ext,jalilm/ryu,fujita/ryu,umkcdcrg01/ryu_openflow,sivaramakrishnansr/ryu,evanscottgray/ryu,Zouyiran/ryu,iwaseyusuke/ryu,diogommartins/ryu,TakeshiTseng/ryu,habibiefaried/ryu,lagopus/ryu-lagopus-ext,StephenKing/ryu,alyosha1879/ryu,ntts-clo/ryu,zangree/ryu,zyq001/ryu,StephenKing/summerschool-2015-ryu,hisaharu/ryu,lzppp/mylearning,hisaharu/ryu,evanscottgray/ryu,fkakuma/ryu,shinpeimuraoka/ryu,alyosha1879/ryu,pichuang/ryu,pichuang/ryu,StephenKing/ryu,umkcdcrg01/ryu_openflow,osrg/ryu,fujita/ryu,gareging/SDN_Framework,hisaharu/ryu,ttsubo/ryu,zangree/ryu,ysywh/ryu,ttsubo/ryu,ynkjm/ryu,John-Lin/ryu,zangree/ryu,shinpeimuraoka/ryu,zyq001/ryu,Tesi-Luca-Davide/ryu,jalilm/ryu,ttsubo/ryu,mikhaelharswanto/ryu