Horizon fails to respond in gate-devstack-dsvm-cells

[Thierry Carrez]

Since earlier this morning we register gate-devstack-dsvm-cells fails due to horizon tests failing:

http://logs.openstack.org/56/162656/5/gate/gate-devstack-dsvm-cells/f9db8b8/console.html

2015-03-17 12:54:55.416 | + curl -g http://127.0.0.1
2015-03-17 12:54:55.417 | + grep -q '<h3.*>Log In</h3>'
2015-03-17 12:54:58.246 | + die 39 'Horizon front page not functioning!'
2015-03-17 12:54:58.246 | + local exitcode=1
2015-03-17 12:54:58.246 | + set +o xtrace
2015-03-17 12:54:58.247 | [Call Trace]
2015-03-17 12:54:58.247 | /opt/stack/new/devstack/exercises/horizon.sh:39:die
2015-03-17 12:54:58.249 | [ERROR] /opt/stack/new/devstack/exercises/horizon.sh:39 Horizon front page not functioning!

This seems to affect most of not all runs:
http://logstash.openstack.org/#eyJzZWFyY2giOiJcIm9wdC9zdGFjay9uZXcvZGV2c3RhY2svZXhlcmNpc2VzL2hvcml6b24uc2g6Mzk6ZGllXCIiLCJmaWVsZHMiOltdLCJvZmZzZXQiOjAsInRpbWVmcmFtZSI6IjE3MjgwMCIsImdyYXBobW9kZSI6ImNvdW50IiwidGltZSI6eyJ1c2VyX2ludGVydmFsIjowfSwic3RhbXAiOjE0MjY1OTk1MDQ0ODd9

[Thierry Carrez (ttx)]

https://review.openstack.org/#/c/165063