Ease configuration around configuration.sh

Some configuration of eoxserver in renderer is handling settings.py and eoxserver.conf with the configuration.sh. This makes syncing the two when a configuration update is in required more and more difficult. (Structlog in eoxserver + VS as an example)

See if the two files can be handled with a chart, and if that solution has any other painpoints, otherwise just removing the renderer in favor of charts existing in eoxserver may be the way.