Jetty.project: Document Conscrypt SSL

[WalkerWatch]

Document the Conscrypt SSL module and associated implementation per #215

[travisspencer]

I didn't find anything in those updated docs, @WalkerWatch , about how to use Conscrypt with Jetty when embedding Jetty. Is that due to my lack of knowledge about modules or did I just miss it in your patch or is that part of the docs TBD?

[WalkerWatch]

@travisspencer Sorry about that, I will get it added. It is actually quite easy to do - simply instantiate an instance of Concrypt's OpenSSLProvider and add it as a provider to the JVM Security class. After that, add Conscrypt as the provider in Jetty's sslContextFactory.

[travisspencer]

That sounds very easy, @WalkerWatch . Thanks for the info and the update to the docs!

[gregw]

We need to document client side usage as well