ACCUMULO-1537 moved integration tests to test/src/test; added more timeouts to tests

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1501750 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1537 improved timing/reliablity of tests

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1501860 13f79535-47bb-0310-9956-ffa450edef68
ACCUMULO-1537 fix race condition for scan timeouts

git-svn-id: https://svn.apache.org/repos/asf/accumulo/trunk@1501884 13f79535-47bb-0310-9956-ffa450edef68