Comment 1 for bug 1365431

As a proof:

<skraynev> shardy: wow. did you say, that periodic mechanism (so and autoscaling without ceilometer) does not work for multi-engines?
<shardy> skraynev: correct, we have no way of deciding which engine should run the periodic task, so they'll all race each other
<shardy> anyone running multiple engines must use ceilometer and not CWLiteAlarm
<shardy> skraynev: https://blueprints.launchpad.net/heat/+spec/deprecate-stack-watch
<shardy> bug #1322128
<uvirtbot> Launchpad bug 1322128 in heat "watch timers can't be disabled for multiple engines"

Later we will add test where will be used ceilometer alarm system instead of heat native cloud-watch. (https://bugs.launchpad.net/fuel/+bug/1361576)