[9.20] new: usr: Tighten 'max-recursion-queries' and add 'max-query-restarts' option

[9.20] new: usr: Tighten 'max-recursion-queries' and add 'max-query-restarts' option

There were cases in resolver.c when the `max-recursion-queries` quota was ineffective. It was possible to craft zones that would cause a resolver to waste resources by sending excessive queries while attempting to resolve a name. This has been addressed by correcting errors in the implementation of `max-recursion-queries`, and by reducing the default value from 100 to 32.

In addition, a new `max-query-restarts` option has been added which limits the number of times a recursive server will follow CNAME or DNAME records before terminating resolution. This was previously a hard-coded limit of 16, and now defaults to 11.

Closes #4741

Backport of MR !9281

Merge branch 'backport-4741-reclimit-restarts-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!9282