Updated openstack/openstack
Project: openstack/swift  7a7cdf3d6a2e2078658df3783170b68f25973db1

Raise ValueError for offset on Timestamp over limit

We can't order a Timestamp with an offset larger than 16 hex digits
correctly, so we raise a ValueError if you try to create one.

Change-Id: I8c8d4cf13785a1a8eb7416392263eae5242aa407