DERBY-6337(derbynet.ServerPropertiesTest.ttestSetPortPriority prints exception java.lang.Exception: DRDA_InvalidReplyTooShort.S:Invalid reply f rom network server: Insufficient data. but test passes)

Backporting changes from trunk to 10.10



git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/branches/10.10@1596749 13f79535-47bb-0310-9956-ffa450edef68