Updated openstack/openstack
Project: openstack/tempest  a5498644ef8f76c3b1c83717b9aaa2efd346af9b

Ensure proper ordering of XML arguments

Random hash ordering can cause the 'encoding' argument to be rendered
in the XML string before the 'version' argument, resulting in XML
deserialization errors on the Keystone side.  This modifies
Document's string rendering to not rely on dict ordering when
constructing the header tag's version + encoding arguments and avoids
XML auth issues when using PYTHONHASHSEED=random.

Change-Id: I66d18a2f8da1088ec5d310a43c84df7e4d6a6f6b