message: build: workaround for
  This started to plague CI after the 0.5.3 upgrade.
diff: @@ -3,8 +3,14 @@ workspace(name = "ci")
  load("//bazel:repositories.bzl", "envoy_dependencies")
  load("//bazel:cc_configure.bzl", "cc_configure")
  +# We shouldn't need this, but it's a workaround for https://github.com/bazelbuild/bazel/issues/3580.
  +local_repository(
  + name = "envoy",
  + path = "/source",
  +)
  +
  envoy_dependencies(
  - path = "//ci/prebuilt",
  + path = "@envoy//ci/prebuilt",
  )
  cc_configure()
  