Replace debrevision_prefix with pkg_revision_template. Their meaning is similar, but the template is not just a prefix, it's a template for Python's %-based string formatting. This allows more complex configuration to be done with command line settings so that it's easy to do a one-off build with a package revision like "kk5.2".

[global]
server.socketPort = 9090
server.threadPool = 10
server.environment = "production"