EdmxReference package is in both commons-api and Server-api

After the build, EdmxReference class is in both "commons-api" and "server-api" jar files. This leads to class loader issues when EdmxReference is used in the code.

This is due to "bundle" package mechanism, depending upon how it configured, it will pull packages from other modules to be complete.

The solution here is to use the distinct package names.