1.10 introduces a PASSWORD_COMPLEXITY setting with a default value
of lower,upper,digit,spec - which requires passwords to have an
upper, lower, digit and special character. Our example password does
not have this, so set the PASSWORD_COMPLEXITY setting. We could
alternately leave it at the default and ensure that our passwords
meet the spec.
The sshd_config file is templated now, so we can set the listen port
via env var.
Change-Id: I6e4b595eabb9c6885d78fff1109ea9f602e89ef7
b3e5f0cab0