WFCORE-68 move cli tests from wf to core

somewhat cleanup testsuite & make it work better under ipv6
Problem here is that sys property that is exposed by maven for repository is not the same as what jboss-modules uses. see https://github.com/jboss-modules/jboss-modules/blob/master/src/main/java/org/jboss/modules/MavenSettings.java#L28 for the change I did in this area, to make sure standard maven property is used.