Stop a bunch of test dependencies from being exported as real dependencies

Cannot start server with pac4j on classpath due to java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details.
Yes, pac4j-core is included higher up in this file as a true dependency. I'm not entirely sure what `&lt;type&gt;test-jar&lt;/type&gt;` means here, but it definitely sounds like this should be marked as a test dependency