KYLIN-3527 fix hybrid couldn't save when there is only 1 cube
KYLIN-3527 fix hybrid couldn't save when there is only 1 cube

apache/incubator-kylin,apache/incubator-kylin,apache/kylin,apache/kylin,apache/incubator-kylin,apache/incubator-kylin,apache/incubator-kylin,apache/kylin,apache/incubator-kylin,apache/kylin,apache/kylin,apache/kylin,apache/kylin