set the default rndc read timeout to 60 seconds
While the connect timeout was set to 60 seconds in rndc, the idle read timeout was left at the default value of 30 seconds. This commit sets it back to 60, to match the behavior in 9.16 and earlier.
See !7889 (merged) for a merge request that was initially a part of this one and makes the timeout configurable.
See #4046 (closed)
Edited by Michał Kępień