[PAXEXAM-532] Use remote resources from org.ops4j.resources
[PAXEXAM-529] Propagate basedir property to OSGi framework
[PAXEXAM-529] Matrix test of exam-maven-plugin

Use all combinations of Equinox/Felix, Native/Forked.
Knopflerfish excluded, as we need OSGi 4.3 for this test. (KF is 4.2)