Upgrade to maven 3.5
Upgrade to maven 3.5

spring-cloud/spring-cloud-dataflow-admin-cloudfoundry,spring-cloud/spring-cloud-dataflow-server-cloudfoundry,spring-cloud/spring-cloud-dataflow-admin-cloudfoundry,spring-cloud/spring-cloud-dataflow-server-cloudfoundry,spring-cloud/spring-cloud-dataflow-server-cloudfoundry,spring-cloud/spring-cloud-dataflow-admin-cloudfoundry