Add option to remove the Server header

[khellang]

Closes #852. Take it or leave it 😉

[Tratcher]

[halter73]

Thannks @khellang! Since you already started on this with ef35d23, do you plan on submitting a PR for #223 too?

[sadjadbp]

Thanks seem like the result would be in RC3 like this (in Program.cs)

.UseKestrel((options) => { options.AddServerHeader = false; })

[khellang]

Since you already started on this with ef35d23, do you plan on submitting a PR for #223 too?

@halter73 Yep. Submitted #862 😁

[guardrex]

@khellang @halter73 This was merged, but I'm not getting access to it. aspnetvnext feed, correct?

[cesarblum]

@guardrex We haven't pushed a build with this yet. You can try using the aspnetcidev feed.