Comment 3 for bug 1805589

o/ was about to file a new bug for this as I see it happening still on master promition, examples here:

http://logs.rdoproject.org/openstack-periodic/git.openstack.org/openstack-infra/tripleo-ci/master/periodic-tripleo-centos-7-master-containers-build/30126eb/logs/undercloud/home/zuul/install-undercloud.log.txt.gz

http://logs.rdoproject.org/openstack-periodic/git.openstack.org/openstack-infra/tripleo-ci/master/periodic-tripleo-centos-7-master-containers-build/8e6e3bc/logs/undercloud/home/zuul/install-undercloud.log.txt.gz

the real error is here " http://logs.rdoproject.org/openstack-periodic/git.openstack.org/openstack-infra/tripleo-ci/master/periodic-tripleo-centos-7-master-containers-build/30126eb/logs/undercloud/var/log/heat-launcher/undercloud_deploy-QM5zx9/heat.log.txt.gz

2018-11-30 04:58:35.535 10386 ERROR oslo_messaging.rpc.server File "/usr/lib/python2.7/site-packages/heat/engine/hot/functions.py", line 71, in result
2018-11-30 04:58:35.535 10386 ERROR oslo_messaging.rpc.server assert self.parameters is not None, "No stack definition in Function"
2018-11-30 04:58:35.535 10386 ERROR oslo_messaging.rpc.server AssertionError: No stack definition in Function