[CI] allow apt-get to retry for network stability (#693)
[CI] allow apt-get to retry for network stability (#693)


bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm,bazelbuild/bazel-buildfarm