Maxctrl/REST-API command for obtaining configuration information

It would be valuable to know how MaxScale is used.

The MaxScale configuration file contains that information, but as the configuration file also contains sensitive information (e.g. passwords), it can't easily be shared.

There should be a REST-API resource and/or a maxctrl command using which the relevant technical information - what routers/filters/monitors are used, the number of servers (although that might be sensitive as well), etc. - can be extracted, so that anybody can easily share that information, without a fear of something sensitive being exposed.