double-take-proxy allow https connection to backend.

[dgriswo]

double-take-hassio-addons/proxy/rootfs/etc/nginx/templates/ingress.gtpl

Line 10 in bd4e3b6

proxy_pass http://backend;

proxy_pass is hard-coded to http. Allowing a toggle between http and https would improve compatibility with ingress controllers.

(I personally use linuxserver.io's swag container and authelia to provide tls and authentication)