"rndc signing -nsec3param ..." requests are silently ignored for zones which are not loaded
rndc signing -nsec3param ... is ran for a zone which has not yet been loaded or transferred (i.e. its
db field is NULL), it will be silently ignored by
rndc logging an "nsec3param request queued" message, which is misleading.
I believe this issue also contributes to a certain failure mode of the "inline" system test (see #285 (closed)) being triggered.