Create Server without initial context

[felicienfrancois]

With https, I can create a tls server without any initial context

var server = https.createServer();

And add dynamic SNI contexts later:

server.addContext(hostname, { key: keyFileData, cert: certFileData });

When I try to do the same with http2, i get an exception.

options.pfx or options.key and options.cert are required!