config: Verify if the config received is valid
config: Verify if the config received is valid

The validation performed is to check if the values make logical sense (e.g.
upper limit can not be smaller than lower limit). The type check is performed in
the parse when the config is received.

CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source,CESARBR/knot-service-source