Fix pom.xml warning
Fix pom.xml warning

[ERROR] Project requires an incorrect minimum version of Maven.
[ERROR] Either change plugin versions to those compatible with 3.0.1
[ERROR] or update the pom.xml to contain
[ERROR]     <prerequisites>
[ERROR]       <maven>3.0.3</maven>
[ERROR]     </prerequisites>

Change-Id: I022bc7201d8c2324c5840710f51185c88441fb8d

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