* VAULT-30819: verify DR secondary leader before unsealing followers
After we've enabled DR replication on the secondary leader the existing
cluster followers will be resealed with the primary clusters encryption
keys. We have to unseal the followers to make them available. To ensure
that we absolutely take every precaution before attempting to unseal the
followers we now verify that the secondary leader is the cluster leader,
has a valid merkle tree, and is streaming wals from the primary cluster
before we attempt to unseal the secondary followers.
Signed-off-by: Ryan Cragun <me@ryan.ec>
