ACCUMULO-1237 ACCUMULO-1289 Applying patch from Corey Nolet that makes proxy unit test use MiniAccumulo.  The patch also minimizes diffs between the proxy in 1.4 and 1.5.

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.4@1470954 13f79535-47bb-0310-9956-ffa450edef68