issues-2552 revert netty upgrade due to test issues
issues-2552 revert netty upgrade due to test issues
mapr/incubator-drill,apache/drill,mapr/incubator-drill,apache/drill,mapr/incubator-drill,apache/drill,apache/drill,mapr/incubator-drill,apache/drill,mapr/incubator-drill,mapr/incubator-drill,apache/drill