[CDH4] Disable TestCancellationFullSort (see IMPALA-1240)

Change-Id: Id85aa2792b7e3bbf61837bb5399623d2810be72e
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4354
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Tested-by: jenkins