ACCUMULO-1365 use the MAC mechanism for finding a random port

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1477782 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1365 use the MAC mechanism for finding a random port

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1477783 13f79535-47bb-0310-9956-ffa450edef68