This task is writing private key from passwords to
/etc/kolla/octavia-worker/{{ octavia_amp_ssh_key_name }} even
if user disabled octavia auto configure.
This patch is adding conditional for this task and skipping
it if octavia_auto_configure: "no".
Closes-Bug: #1927727
Change-Id: Ib993b387d681921d804f654bea780a1481b2b0d0