ACCUMULO-1173 disconnect events do not set a path

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.4@1455610 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1173 ensure that threads serving requests are Daemonized

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.4@1455639 13f79535-47bb-0310-9956-ffa450edef68