Root pom.xml fixes
Root pom.xml fixes

- Adding jsr305 to remove annotation errors in findbugs/sonarqube
- Moving argLine to properties from maven-surefire-plugin
  to fix sonarqube test coverage
- Updating maven-jar-plugin to 2.6, so that we can add
  skipIfEmpty to avoid generating test jars for pom artifacts

Change-Id: Iea9eff91dab42bfa2a41012908dd563632819741

mengmoya/onos,LorenzReinhart/ONOSnew,gkatsikas/onos,sonu283304/onos,LorenzReinhart/ONOSnew,sonu283304/onos,sdnwiselab/onos,osinstom/onos,opennetworkinglab/onos,kuujo/onos,Shashikanth-Huawei/bmp,opennetworkinglab/onos,maheshraju-Huawei/actn,kuujo/onos,mengmoya/onos,oplinkoms/onos,LorenzReinhart/ONOSnew,oplinkoms/onos,LorenzReinhart/ONOSnew,donNewtonAlpha/onos,gkatsikas/onos,donNewtonAlpha/onos,kuujo/onos,opennetworkinglab/onos,sonu283304/onos,sdnwiselab/onos,Shashikanth-Huawei/bmp,gkatsikas/onos,VinodKumarS-Huawei/ietf96yang,oplinkoms/onos,Shashikanth-Huawei/bmp,y-higuchi/onos,mengmoya/onos,maheshraju-Huawei/actn,gkatsikas/onos,osinstom/onos,sdnwiselab/onos,oplinkoms/onos,osinstom/onos,mengmoya/onos,mengmoya/onos,gkatsikas/onos,LorenzReinhart/ONOSnew,y-higuchi/onos,VinodKumarS-Huawei/ietf96yang,sdnwiselab/onos,sdnwiselab/onos,opennetworkinglab/onos,maheshraju-Huawei/actn,lsinfo3/onos,VinodKumarS-Huawei/ietf96yang,maheshraju-Huawei/actn,donNewtonAlpha/onos,VinodKumarS-Huawei/ietf96yang,kuujo/onos,y-higuchi/onos,Shashikanth-Huawei/bmp,osinstom/onos,oplinkoms/onos,oplinkoms/onos,maheshraju-Huawei/actn,VinodKumarS-Huawei/ietf96yang,osinstom/onos,gkatsikas/onos,kuujo/onos,donNewtonAlpha/onos,lsinfo3/onos,kuujo/onos,oplinkoms/onos,kuujo/onos,sonu283304/onos,donNewtonAlpha/onos,y-higuchi/onos,Shashikanth-Huawei/bmp,opennetworkinglab/onos,lsinfo3/onos,opennetworkinglab/onos,y-higuchi/onos,lsinfo3/onos,sdnwiselab/onos