[9.20] chg: usr: allow shorter resolver-query-timeout configuration
requested to merge backport-4320-allow-shorter-resolver-query-timeout-configuration-9.20 into bind-9.20
The minimum allowed value of 'resolver-query-timeout' was lowered to 301 milliseconds instead of the earlier 10000 milliseconds (which is the default). As earlier, values less than or equal to 300 are converted to seconds before applying the limit.
Closes #4320 (closed)
Backport of MR !9091 (merged)