message: Consume java_import_external from bazel_tools instead of rules_closure
  The version in rules_closure is being removed here:
diff: @@ -15,7 +15,7 @@ load("//third_party/toolchains/clang6:repo.bzl", "clang6_configure")
  load("//third_party/toolchains/cpus/arm:arm_compiler_configure.bzl", "arm_compiler_configure")
  load("//third_party:repo.bzl", "tf_http_archive")
  load("//third_party/clang_toolchain:cc_configure_clang.bzl", "cc_download_clang_toolchain")
  -load("@io_bazel_rules_closure//closure/private:java_import_external.bzl", "java_import_external")
  +load("@bazel_tools//tools/build_defs/repo:java.bzl", "java_import_external")
  load("@io_bazel_rules_closure//closure:defs.bzl", "filegroup_external")
  load(
  "//tensorflow/tools/def_file_filter:def_file_filter_configure.bzl",
  