Make "checking revoked key with duplicate key ID" work [v9_18]
requested to merge 3446-autosign-s-checking-revoked-key-with-duplicate-key-id-test-was-incomplete-v9_18 into v9_18
There should be 2 keys with the same key id after the numerically lower one is revoked (serial space arithmetic). The DS points at the non-revoked key so validation should still succeed.
(cherry picked from commit 513cb24b)
Closes #3446 (closed)