The /share registration is not needed by programs like
talks and blog, only by golang.org, so installing it by default
is unnecessary and perhaps more exposure than people running
those servers intend.
Add Proxy to allow recreating the /share registration (unlikely)
or installing the proxy on an alternate mux (more likely).
Change-Id: Ibb33add804d353920d405bf022428e48b3815da3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/293449
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>