Fix the error when creating router objects where metadata was not passed to get_metadata
Fix the error when creating router objects where metadata was not passed to get_metadata

nuagenetworks/nuage-kubernetes,vareti/nuage-kubernetes,kmurthy1/nuage-kubernetes,nuagenetworks/nuage-kubernetes,rushabh268/nuage-kubernetes,vareti/nuage-kubernetes,vareti/nuage-kubernetes,rushabh268/nuage-kubernetes,nuagenetworks/nuage-kubernetes,kmurthy1/nuage-kubernetes,nuagenetworks/nuage-kubernetes,kmurthy1/nuage-kubernetes,kmurthy1/nuage-kubernetes,vareti/nuage-kubernetes,rushabh268/nuage-kubernetes,rushabh268/nuage-kubernetes