add the key used in newly initialized machines to the user's known_hosts file. This ensures that golang will be able to ssh into the machine using
podman-remote. Also, remove the /dev/null redirection for podman machine ssh's known_hosts file.
resolves#15347
Signed-off-by: Charlie Doern <cdoern@redhat.com>
Signed-off-by: cdoern <cbdoer23@g.holycross.edu>