ISPN-5024 Only enable maven-scala-plugin executions where it is needed

* convert additional modules to generate META-INF/services automatically, but leave out server modules
* remove blueprint.xml from server modules which are not supposed to run in OSGi

Also spotted three CLI commands that were not exposed as services, this is now fixed.

This fixes https://issues.jboss.org/browse/ISPN-5045 only partially. The remaining thing is to include CLI cache loader in the uber jar. This is more complicated as CLI is bundled in a separate uber-jar