ktls: Init reset tag task for cloned sessions

When cloning a ktls session (which is needed when we need to
switch output NICs for a NIC TLS session), we need to also
init the reset task, like we do when creating a new tls session.

Reviewed by: jhb
Sponsored by: Netflix

(cherry picked from commit 95c51fafa40d56d0a32aff857261097acc65ec92)