Don't use peer with no rpc_address specified
Don't use peer with no rpc_address specified

See JAVA-428

mpenick/cpp-driver,Teino1978-Corp/cpp-driver,flightaware/cpp-driver,mikefero/cpp-driver,datastax/cpp-driver,tempbottle/cpp-driver,Teino1978-Corp/cpp-driver,Teino1978-Corp/cpp-driver,hpcc-systems/cpp-driver,mikefero/cpp-driver,Teino1978-Corp/cpp-driver,hpcc-systems/cpp-driver,datastax/cpp-driver,flightaware/cpp-driver,zhangpng/cpp-driver,mpenick/cpp-driver,flightaware/cpp-driver,zhangpng/cpp-driver,mikefero/cpp-driver,mpenick/cpp-driver,datastax/cpp-driver,datastax/cpp-driver,zhangpng/cpp-driver,hpcc-systems/cpp-driver,mpenick/cpp-driver,mikefero/cpp-driver,hpcc-systems/cpp-driver,tempbottle/cpp-driver,tempbottle/cpp-driver,zhangpng/cpp-driver,mikefero/cpp-driver,flightaware/cpp-driver,tempbottle/cpp-driver