Classify tempest lxml hashseed bug 1360034

This showed up on 8/20, it's already fixed,
but since it has over 2000 hits in logstash
in check and gate and all branches let's
classify it to get it off the uncategorized
bugs list.

Change-Id: I325c9807e9049855f74ca694e72352cfde315e0b
Related-Bug: #1360034
Merge "Classify tempest lxml hashseed bug 1360034"