In particular, put the sudoers.d setup into one script (making
updates to it easier in the future if necessary), and
centralize the proxied vars into a const in common.sh.
Thanks to Kevin McCray/Josh Triplett/Alexander Kanevsky for
pointing out the missing proxy variables, and fixes/cleanup.
BUG=None
TEST=https_proxy=blah cros_sdk -- bash -c 'echo $https_proxy'
TEST=build_packages behind a proxy.
TEST=cros_sdk --replace && \
RSYNC_PROXY=blah cros_sdk -- bash -c 'echo $RSYNC_PROXY'
Change-Id: I3165882dfd9c8b52d25c2b26d7ff9242c84c91bd
Reviewed-on: https://gerrit.chromium.org/gerrit/31185
Tested-by: Brian Harring <ferringb@chromium.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Ready: Josh Triplett <josh@joshtriplett.org>
