LPS-52266 Move all source foramtter tests to become unit tests

This is attempting to fix the random happening jvm crash failure on Spain CI server, failure like this:
http://ci.liferay.org.es/jenkins/job/liferay-portal-master/464/testReport/junit/com.liferay.portlet.wiki.trash/Batch-With-Multiple-Tests/testSourceFormatter/
http://files.liferay.org.es/staged/public-files/liferay-ide/hs_err_pid31999.log

CC @mdelapenya

This should at least help, if the same failure happens again, I have other ideas to try to make it go away, just sending the jvm crashing log.