[WFLY-18382] Update WFLY and EJB Maven plugin versions

[zhantemirov]

The issue: WFLY-18382

Though each QS defines own WFLY Maven plugin version in its pom.xml, it's better to have a single version among all QS (and parent as well).

If I'm not mistaken, the EJB Maven plugin should have version 3.2.1 instead of 3.2, but feel free to correct me.

[emmartins]

I think we should actually get ridden of the plugin in the parent, those are left overs from the parent extraction that we should fix otherwise the QS is not independent as it should, i.e. every QS should have the wildfly plugin in its pom's pluginManagement section. IMHO the only resources we should keep in the parent are the ones related with the project management specifics, which the user app doesn't need (e.g. asciidoc)

[emmartins]

I have expanded the scope of WFLY-18409 to also take care of this in the future, so for now let's merge this