Partial revert "tooling: Remove (default) remote_download_all flags (…

…envoyproxy#21733)" (envoyproxy#21776)

This partially reverts commit 8672554.

Signed-off-by: Ryan Northey <ryan@synca.io>

bazel/README.md

@@ -310,6 +310,10 @@ bazel build envoy --config=remote-clang \
 Change the value of `--remote_cache`, `--remote_executor` and `--remote_instance_name` for your remote build services. Tests can
 be run in remote execution too.
 
+Note: Currently the test run configuration in `.bazelrc` doesn't download test binaries and test logs,
+to override the behavior set [`--remote_download_outputs`](https://docs.bazel.build/versions/master/command-line-reference.html#flag--remote_download_outputs)
+accordingly.
+
 ## Building Envoy with Docker sandbox
 
 Building Envoy with Docker sandbox uses the same Docker image used in CI with fixed C++ toolchain configuration. It produces more consistent