Secure connections with HTTPS

[LourensVeen]

• Make scenario hostnames match certificates
• Configure scenario nginx for HTTPS with server-side certificates
• Configure scenario HTTP clients to use HTTPS and check certificates
• Make sites pass certificates as client certificates
• Add client-side certificate passthrough to nginx
• Check originating site on asset request
• Check originating site on execution request
• Make users pass client certificates
• Check client certificate on policy upload
• Check client certificate on asset upload
• Check client certificate on workflow submission