Makes reading Windows Kokoro build logs possible on bad WiFi.

Bug: b/123933266
Bug: b/115344057
Change-Id: I4f336f8bd149e99f9926853fc09b79f7a063ea4b
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29148Tested-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>