The parameter type and value validation is now fully done for the base
module parameters as well. This fixes a problem that was introduced when
the listeners were moved to the module parameter system where the
`service` parameter values weren't fixed for the new naming style.
Added an explicit check for the module type that catches errors in the
type parameter. The lack of this parameter prevents the proper detection
of other parameters.
Also cleaned up and/or removed redundant sections of code. By treating
reserved parameters the same way as module declared ones, the same code
can be re-used for all types.
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