Code restructuring continuation - Remove use of Agent::GetInstance() in interface files - Use CfgListener::SkipNode instead of CfgListener::CanUseNode for simplicity - Rename class PktInterface to PacketInterface - Rename CfgFloatingIp to FloatingIpConfig, CfgServiceVlan to ServiceVlanConfig   and CfgStaticRoute to StaticRouteConfig
Code restructuring continuation
- Remove use of Agent::GetInstance() in interface files
- Use CfgListener::SkipNode instead of CfgListener::CanUseNode for simplicity
- Rename class PktInterface to PacketInterface
- Rename CfgFloatingIp to FloatingIpConfig, CfgServiceVlan to ServiceVlanConfig
  and CfgStaticRoute to StaticRouteConfig

numansiddique/contrail-controller,reiaaoyama/contrail-controller,vmahuli/contrail-controller,tcpcloud/contrail-controller,codilime/contrail-controller,cloudwatt/contrail-controller,srajag/contrail-controller,tcpcloud/contrail-controller,tcpcloud/contrail-controller,reiaaoyama/contrail-controller,reiaaoyama/contrail-controller,tcpcloud/contrail-controller,vmahuli/contrail-controller,vpramo/contrail-controller,nischalsheth/contrail-controller,vmahuli/contrail-controller,Juniper/contrail-controller-test,rombie/contrail-controller,nischalsheth/contrail-controller,reiaaoyama/contrail-controller,varunarya10/contrail-controller,varunarya10/contrail-controller,DreamLab/contrail-controller,srajag/contrail-controller,facetothefate/contrail-controller,sajuptpm/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,Juniper/contrail-controller-test,rombie/contrail-controller,varunarya10/contrail-controller,varunarya10/contrail-controller,reiaaoyama/contrail-controller,vmahuli/contrail-controller,cloudwatt/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,codilime/contrail-controller,numansiddique/contrail-controller,Juniper/contrail-dev-controller,hthompson6/contrail-controller,aranjan7/contrail-controller-aranjan,eonpatapon/contrail-controller,nischalsheth/contrail-controller,numansiddique/contrail-controller,numansiddique/contrail-controller,eonpatapon/contrail-controller,srajag/contrail-controller,facetothefate/contrail-controller,numansiddique/contrail-controller,vpramo/contrail-controller,DreamLab/contrail-controller,cloudwatt/contrail-controller,tcpcloud/contrail-controller,vpramo/contrail-controller,eonpatapon/contrail-controller,cloudwatt/contrail-controller,srajag/contrail-controller,Juniper/contrail-controller-test,facetothefate/contrail-controller,codilime/contrail-controller,vmahuli/contrail-controller,srajag/contrail-controller,aranjan7/contrail-controller-aranjan,Juniper/contrail-controller-test,rombie/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,aranjan7/contrail-controller-aranjan,DreamLab/contrail-controller,sajuptpm/contrail-controller,hthompson6/contrail-controller,aranjan7/contrail-controller-aranjan,vpramo/contrail-controller,eonpatapon/contrail-controller,sajuptpm/contrail-controller,hthompson6/contrail-controller,nischalsheth/contrail-controller,sajuptpm/contrail-controller,vpramo/contrail-controller,facetothefate/contrail-controller,DreamLab/contrail-controller,tcpcloud/contrail-controller,Juniper/contrail-dev-controller,facetothefate/contrail-controller,hthompson6/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,hthompson6/contrail-controller,cloudwatt/contrail-controller,sajuptpm/contrail-controller,Juniper/contrail-dev-controller,rombie/contrail-controller,varunarya10/contrail-controller,DreamLab/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,sajuptpm/contrail-controller,Juniper/contrail-controller-test,Juniper/contrail-dev-controller,nischalsheth/contrail-controller,Juniper/contrail-dev-controller,aranjan7/contrail-controller-aranjan