Deploy user SSL keys for novnc console containers so users viewing
the console in Horizon will be able to access the console over https.
Example configuration:
nova_console_type: novnc
nova_novncproxy_proto: https
nova_console_user_ssl_cert: ~/certs/horizon.pem
nova_console_user_ssl_key: ~/certs/horizon.key
nova_console_user_ssl_ca_cert: "{{ ssl_ca_cert }}"
Change-Id: Icb66631ac0b00afe12519fd742e3198e828a10cc
9a0529c03e