ACCUMULO-581 make ShellServerTest portable to hadoop2.0

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1460660 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-581 make ShellServerTest portable to hadoop2.0

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1460663 13f79535-47bb-0310-9956-ffa450edef68