Inherit dnssec-policy in check for inline-signing

Inherit dnssec-policy in check for inline-signing

When dnssec-policy is used, and the zone is not dynamic, BIND will
assume that the zone is inline-signed. But the function responsible
for this did not inherit the dnssec-policy option from the view or
options level, and thus never enabled inline-signing, while the zone
should have been.

This is fixed by this commit.

(cherry picked from commit 576b21b1682605a7d04e51c8a7721180f828b2d7)