unbound-checkconf does not check view existence

[Ridorix]

unbound-checkconf does not check if the view exists when it defined by access-control-view.

So, when executing unbound-control reload this command reports ok and restarts the service.

But the service actually stops and can't start with the error:
error: no view with name: test_zone_01
fatal error: Could not setup access control list

Version: 1.10.1

[wcawijngaards]

Thanks for the report, added code to check that and a number of other statements for access control views and tags.