commit 2fa06788d5bf9a718f8d5d4c63be5db0b58cd1dd
author Ross Light <light@google.com> Mon Oct 09 10:48:13 2017 -0700
committer Ross Light <light@google.com> Fri Oct 13 23:46:08 2017 +0000
tree f5d0c3b3c521541dc8b298d44b091c32b99a9df4
parent 7957f9b795e923f872852fa7f728eb7fba463cbc

httputil: remove Transport constructors aware of environment

Each of the servers has slightly different needs for configuring their
outbound HTTP transport.  A little copying is better than a little
dependency.

Notably, the configuration logic in gddo-server is now consistent with
the rest of the configuration-gathering logic.

Change-Id: Ibe7d287a102e20e6e13d97e8a6483d9febab6442
Reviewed-on: https://go-review.googlesource.com/69291
Reviewed-by: Tuo Shan <shantuo@google.com>