Updated openstack/openstack
Project: openstack/python-heatclient  644d1489191696642b50cfa582df92ca8499e7d0
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Pass bytes to NamedTemporaryFile.write()

In Python 3, this function takes bytes as an input.

Change-Id: I45faa50c4796605885489c9003a1b23b0f0b3080