Add HTTPS2 support for Omnibus
We should deprecate SPDY support and enable HTTP2 which is supported since 1.9.5 release: https://www.nginx.com/blog/nginx-1-9-5/.
/cc @marin
We should deprecate SPDY support and enable HTTP2 which is supported since 1.9.5 release: https://www.nginx.com/blog/nginx-1-9-5/.
/cc @marin