[magnum][stein][kolla-ansible] Cluster creation timeout

Hi everyone, I am currently working on Magnum installed on kolla-ansible stein version. I followed the docs and created clusters using Fedora-Atomic-27-20180419.0.x86_64.qcow2 image according to docs. Now, magnum is creating necessary resources, VMs etc but after some time it is getting timeout at kube_minions&kube_cluster_deploy steps and there are not any information logs about it. I've tried to use different images but I could not succeed. Can you help me, please? Thanks a lot, İzzettin.