Small changes to the maven configuration.

This commit can be resumed as follows:

    - Removed duplication for common dependencies between modules
    - Added some common dependencies to the parent's dependencyManagement section
    - Some modules were defining the version for managed dependencies
    - Removed duplicated checkstyle configuration. Updated the SCIM module.
    - PLINK-116. Changed the jboss-logging-processor scope to provided. It was wrongly defined as a compile dependencies.

All changes were tested and the build is fine.