Updated openstack/openstack
Project: openstack/nova  c566923ccec596f8bdca8e4b3cb65236ea4f9a08
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The private method _text_node should be used as function

If the class method does not reference any of the class attributes
it may be more clear to define the method as a static function instead.

Change-Id: I273e00fc4ab6fecafcd7bdeaf3b809a6688025c5