Add query for heat timeout bug 1306029

There are no errors in the heat logs that are directly related to this,
it's an intermittent timeout failure in the Tempest test waiting to tear
down (delete) the stack so I'm querying on the deletion/timeout error in
the console log.

Related-Bug: #1306029

Change-Id: If1157f3ca1d7fe705b5f0d84120021ec507d08f8