This reverts commit 6c939860.

Reason for revert:
I started to see Exceptions after the rollout.
Let me speculatively revert.

Original change's description:
> Roll out new goma client binary VERSION=211
>
> Bug: b/177285551
> Change-Id: I59ca57d05555a2fe922d3056e6d52842b4bb66ac
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2646141
> Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
> Reviewed-by: Fumitoshi Ukai <ukai@google.com>
> Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>

TBR=ukai@google.com,yyanagisawa@chromium.org,tikuta@chromium.org,yekuang@google.com,infra-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I94b829d33f7f0bc897cdf661e892ff1264e773e1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: b/177285551
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2646767Reviewed-by: Yoshisato Yanagisawa <yyanagisawa@chromium.org>
Commit-Queue: Yoshisato Yanagisawa <yyanagisawa@chromium.org>