FORWARD: don't validate NS in authority section

Fixes https://gitlab.labs.nic.cz/knot/knot-resolver/issues/248 Some (exotic?) resolvers add extra NS records but doesn't provide signatures for them even though we ask with +dnssec +cd. That lead to validation errors. Current example server: 198.101.242.72 Let's not try to validate them when FORWARDing, as we won't most likely need those records anyway (contrary to iteration mode).

added 4 commits

• 339c790e...95a393d1 - 3 commits from branch master
• fea13fcf - FORWARD: don't validate NS in authority section

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added 1 commit

• 47f92156 - validate: improve verbose messages

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mentioned in commit deckard@671ecfe2

added 2 commits

• e9554a37 - nitpick: unsigned vs. long makes a difference in printf
• 0f8820d0 - validate: wildcard expansion -> adjust to_wire

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added 1 commit

• a053234c - validate: wildcard expansion -> adjust to_wire

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enabled an automatic merge when the pipeline for a053234c succeeds

merged

mentioned in commit 6eb9fa7a