fix unnecessary data plane generation for non-data-plane questions
fix unnecessary data plane generation for non-data-plane questions

intentionet/batfish,batfish/batfish,batfish/batfish,batfish/batfish,dhalperi/batfish,intentionet/batfish,arifogel/batfish,intentionet/batfish,intentionet/batfish,dhalperi/batfish,intentionet/batfish,arifogel/batfish,dhalperi/batfish,arifogel/batfish