Fixed not working itests:

- bumping Felix framework to a later one seems to cause the itests
  to run again without failing on missing javax.* packages;
- updated to latest Pax-Exam 2.x plugins (while we're at it).



git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1634882 13f79535-47bb-0310-9956-ffa450edef68