(1) Replacing db.properties with management server db.properties
(2) Rename log4j-cloud_usage.xml to log4j-cloud.xml
(cherry picked from commit fb97e8e617393ac86924304f2765e933cfa30a6a)
We no longer symlink db.properties to the management server, but
we create a own db.properties for the usage server.
During a upgrade we copy the file to make the upgrade easier.