Add test configurations with invalid dnssec-policy clauses

bad-ksk-without-zsk.conf only has a ksk defined without a matching zsk for the same algorithm.

bad-zsk-without-ksk.conf only has a zsk defined without a matching ksk for the same algorithm.

bad-unpaired-keys.conf has two keys of different algorithms one ksk only and the other zsk only

(cherry picked from commit f23e86b9)

Closes #3142 (closed)

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