Updated openstack/openstack
Project: openstack/horizon  1cd719dcd419d57ec662ad7f2e0c988d02943cbf
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Ensure TabGroup to handle bad GET parameter

TabGroups and thus TabViews and TabbedTableViews don't handle bad GET
params well.

Example:  project/volumes/?tab=<!--
results in a "ValueError: need more than 1 value to unpack" error.

Change-Id: I7faf4f8c1c5c1f0ea078615282e7a7fbae2384b2
Closes-Bug: 1291567