message: Fix errors related to flatbuffers python library in Kokoro ubuntu_16 GCS build
diff: @@ -358,11 +358,8 @@ def _concat_flatbuffer_py_srcs_impl(ctx):
  outputs = [ctx.outputs.out],
  command = (
  "find '%s' -name '*.py' -exec cat {} + |" +
  - "sed '/import flatbuffers/d' |" +
  - "sed 's/from flatbuffers." +
  - "/from flatbuffers.python.flatbuffers./' |" +
  - "sed '1s/^/from flatbuffers.python " +
  - "import flatbuffers\\'$'\\n/' > %s"
  + "sed 's/from flatbuffers.compat import import_numpy/import numpy as np' |" +
  + "sed '/np = import_numpy()/d' > %s"
  ) % (
  ctx.attr.deps[0].files.to_list()[0].path,
  ctx.outputs.out.path,
  