remove dublication for internal_net
remove dublication for internal_net

Change-Id: I1c0eb162df1e91d17cfa617983c45473affadeea

SmartInfrastructures/fuel-main-dev,eayunstack/fuel-main,eayunstack/fuel-main,ddepaoli3/fuel-main-dev,SergK/fuel-main,huntxu/fuel-main,SmartInfrastructures/fuel-main-dev,teselkin/fuel-main,dancn/fuel-main-dev,Fiware/ops.Fuel-main-dev,AnselZhangGit/fuel-main,stackforge/fuel-main,dancn/fuel-main-dev,ddepaoli3/fuel-main-dev,zhaochao/fuel-main,AnselZhangGit/fuel-main,zhaochao/fuel-main,ddepaoli3/fuel-main-dev,eayunstack/fuel-main,zhaochao/fuel-main,AnselZhangGit/fuel-main,huntxu/fuel-main,zhaochao/fuel-main,Fiware/ops.Fuel-main-dev,teselkin/fuel-main,ddepaoli3/fuel-main-dev,dancn/fuel-main-dev,stackforge/fuel-main,stackforge/fuel-main,zhaochao/fuel-main,SmartInfrastructures/fuel-main-dev,AnselZhangGit/fuel-main,Fiware/ops.Fuel-main-dev,SergK/fuel-main,teselkin/fuel-main,huntxu/fuel-main,Fiware/ops.Fuel-main-dev,SergK/fuel-main,SmartInfrastructures/fuel-main-dev,dancn/fuel-main-dev,teselkin/fuel-main