Revert of Inherit appropiate environment variables in goma module for goma_utils.py (patchset #7 id:120001 of https://codereview.chromium.org/2245553002/ )

Reason for revert:
This interacts badly with the recipe autoroller, see e.g. https://goto.google.com/tezblb .

Original issue's description:
> Inherit appropiate environment variables in goma module for goma_utils.py
>
> goma_utils.py finds a compiler_proxy.INFO from temporary dir set in env.
> But, there is not consistency with glog temporary dir.
> glog uses GLOG_log_dir if it is set in env.
> By inheriting some env variables and forbidding GLOG_log_dir,
> goma_util.py can find the INFO file from correct location.
>
> * inherit some env vars to upload with log in goma_utils.SendGomaTsMon().
> * if GLOG_log_dir is set, assertion failed.
> * stop to use GOMA_TMP_DIR as candidate directory for glog *.INFO files.
> * rename GetGomaTmpDirectory -> GetGomaLogDirectory in goma_utils.py
>
> BUG=544330
>
> Committed: https://chromium.googlesource.com/chromium/tools/build/+/6da5a843e44836e7b7b084a6eca6c65eb4b4f16b

TBR=shinyak@chromium.org,ukai@chromium.org,yyanagisawa@chromium.org,tikuta@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=544330

Review-Url: https://codereview.chromium.org/2250973002
8 files changed