Updated openstack/openstack
Project: openstack/nova  46e62de1c6493058608e7bf6b9218aed5804963d
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Return client tokens in EC2 DescribeInstances

EC2 instances can be instantiated with a client token, a per-instance
unique token that enforces idempotency for RunInstance calls.
If a client token exists, DescribeInstances will return it wrapped
in <clientToken></clientToken>.

Change-Id: I1deb2c0666d0274ed3c181ecb0e0dc65112605ec
Closes-Bug: #1260853