Updated openstack/openstack
Project: openstack-dev/devstack  53aaf15af37c718af8b47d1d2ba0052a875faed7

Horizon front page test fix

Fixes the test string in horizon front page test so it is not failing
when header tag gets new attributes

Change-Id: Ibf62bf6f6300eeb0ab2f22086b0ff1c05c69d86b