SLING-3450 : JMX Resource Provider should not use instanceof checks

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1577132 13f79535-47bb-0310-9956-ffa450edef68
Use latest servlets get from trunk

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1577133 13f79535-47bb-0310-9956-ffa450edef68