This is a follow-up from the test cases that were added long time ago
that cover migrating to dnssec-policy.
The test covers legacy keys that do not have the SyncPublish timing
metadata set.
(cherry picked from commit dfdac550d823861edcf447899dc4957404e473e4)
Various test cases where legacy keys exist and are used to migrate to
dnssec-policy. These once existed as shell script but were removed
because auto-dnssec was removed. But the test cases are still useful
if one wants to migrate to dnssec-policy with such legacy keys.
The tests were previously removed in commit
906dd57b68dab3526af82ec266f413e11391394d as part of MR !8085.
(cherry picked from commit 649981483575e3ddea26b9044c3cf4fa2502d2fa)
