Added code-coverage plugin to the top-level pom.
Added code-coverage plugin to the top-level pom.

sonu283304/onos,planoAccess/clonedONOS,sonu283304/onos,oeeagle/onos,kuangrewawa/onos,chinghanyu/onos,donNewtonAlpha/onos,chenxiuyang/onos,oplinkoms/onos,sdnwiselab/onos,zsh2938/onos,kuujo/onos,oplinkoms/onos,jmiserez/onos,oplinkoms/onos,LorenzReinhart/ONOSnew,VinodKumarS-Huawei/ietf96yang,donNewtonAlpha/onos,SmartInfrastructures/dreamer,packet-tracker/onos,oplinkoms/onos,sonu283304/onos,osinstom/onos,rvhub/onos,kkkane/ONOS,Shashikanth-Huawei/bmp,kuujo/onos,castroflavio/onos,oeeagle/onos,zsh2938/onos,castroflavio/onos,gkatsikas/onos,donNewtonAlpha/onos,Shashikanth-Huawei/bmp,CNlukai/onos-gerrit-test,planoAccess/clonedONOS,opennetworkinglab/onos,chenxiuyang/onos,kuujo/onos,lsinfo3/onos,sonu283304/onos,y-higuchi/onos,LorenzReinhart/ONOSnew,gkatsikas/onos,VinodKumarS-Huawei/ietf96yang,jmiserez/onos,kuujo/onos,osinstom/onos,sdnwiselab/onos,maheshraju-Huawei/actn,y-higuchi/onos,oplinkoms/onos,oplinkoms/onos,chinghanyu/onos,sdnwiselab/onos,LorenzReinhart/ONOSnew,VinodKumarS-Huawei/ietf96yang,maheshraju-Huawei/actn,VinodKumarS-Huawei/ietf96yang,kuujo/onos,Shashikanth-Huawei/bmp,mengmoya/onos,CNlukai/onos-gerrit-test,planoAccess/clonedONOS,oeeagle/onos,opennetworkinglab/onos,CNlukai/onos-gerrit-test,opennetworkinglab/onos,planoAccess/clonedONOS,SmartInfrastructures/dreamer,castroflavio/onos,rvhub/onos,mengmoya/onos,jinlongliu/onos,lsinfo3/onos,Shashikanth-Huawei/bmp,osinstom/onos,kkkane/ONOS,rvhub/onos,kuujo/onos,LorenzReinhart/ONOSnew,kuangrewawa/onos,y-higuchi/onos,zsh2938/onos,gkatsikas/onos,osinstom/onos,lsinfo3/onos,y-higuchi/onos,CNlukai/onos-gerrit-test,castroflavio/onos,ravikumaran2015/ravikumaran201504,packet-tracker/onos,sdnwiselab/onos,jmiserez/onos,Shashikanth-Huawei/bmp,opennetworkinglab/onos,SmartInfrastructures/dreamer,opennetworkinglab/onos,donNewtonAlpha/onos,chenxiuyang/onos,jinlongliu/onos,mengmoya/onos,packet-tracker/onos,kuujo/onos,oeeagle/onos,maheshraju-Huawei/actn,VinodKumarS-Huawei/ietf96yang,gkatsikas/onos,lsinfo3/onos,opennetworkinglab/onos,osinstom/onos,chinghanyu/onos,donNewtonAlpha/onos,kkkane/ONOS,jinlongliu/onos,ravikumaran2015/ravikumaran201504,sdnwiselab/onos,zsh2938/onos,rvhub/onos,gkatsikas/onos,y-higuchi/onos,packet-tracker/onos,jmiserez/onos,sdnwiselab/onos,mengmoya/onos,kuangrewawa/onos,jinlongliu/onos,gkatsikas/onos,maheshraju-Huawei/actn,LorenzReinhart/ONOSnew,chenxiuyang/onos,maheshraju-Huawei/actn,oplinkoms/onos,mengmoya/onos,kkkane/ONOS,chinghanyu/onos,ravikumaran2015/ravikumaran201504