It exposes two metrics about the IPMI system event log (SEL), the
current number of entries stored in it and the free space for new
records. The collector is not enabled by default, it has to be
explicitly enabled in the config.
Related to #41.
Specifically, allow definition of a set of settings as module in the
configuration file, and the ability to use these settings by setting the
`module` URL parameter to the respective module name when scraping.
THIS COMMIT CHANGES THE CONFIG FORMAT IN A NON-BACKWARDS-COMPATIBLE WAY!
Based on this, the following "side effects" are noteworthy:
- the exporter no longer requires a config file
- the IPMI "privilege level" can be set in the config file
- collectors can be enabled/disabled in the config file
- anonymous IPMI access is now theoretically possible
- there are now two example configurations (local & remote)
This fixes#10 by allowing to set the privilege level.
