Send upstream TAT queries for locally served zones
Trying to resolve a trust anchor telemetry query for a locally served zone does not cause upstream queries to be sent as the response is determined just by consulting local data. Work around this issue by calling dns_view_findzonecut() first in order to determine the NS RRset for a given domain name and then passing the zone cut found to dns_resolver_createfetch(). Note that this change only applies to TAT queries generated by the resolver itself, not to ones received from downstream resolvers.
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