Fix test (we were just lucky before that hsqldb.version property was 2.3.3 when executing this project)

XWIKI-13292: Provide a test module to use as dependency for the module manipulating oldcore test tools

XWIKI-12998: Delete events do not correctly update documents when running multiple instances of XWiki with jgroups
* also moved clustering test fom XE to platform

* Make the modules with outputs use the new simpler way to exclude the verification