SLING-3084 - add forceReload option to JUnitServlet

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1524717 13f79535-47bb-0310-9956-ffa450edef68
SLING-3084 - use new forceReload option of JUnitServlet

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1524718 13f79535-47bb-0310-9956-ffa450edef68