Now Magnum is using podman and systemd to manage the etcd service
and start heat-container-agent. In cases where the nodes pull images
from docker.io or another mirror registry with high latency, the etcd
or heat container agent service take long time to start, which is
causing timeout when bootstraping k8s cluster for fedora atomic/coreos
drivers. This patch fixes it by adding TimeoutStartSec for the systemd
services.
Task: 37452
Story: 2006459
Change-Id: I89855983f45544f202fc94ede396d1b0c44d286e