Add get_cfn_attribute support for ECS Cluster and Service
Add get_cfn_attribute support for ECS Cluster and Service

whummer/moto,william-richard/moto,william-richard/moto,spulec/moto,spulec/moto,whummer/moto,whummer/moto,spulec/moto,william-richard/moto,william-richard/moto,spulec/moto,whummer/moto,whummer/moto,spulec/moto,william-richard/moto,william-richard/moto,whummer/moto,spulec/moto