containerd: ensure containerd is really started and enabled

Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>

roles/container-engine/containerd/tasks/main.yml

@@ -115,3 +115,14 @@
 
 - include_role:
     name: container-engine/crictl
+
+# you can sometimes end up in a state where everything is installed
+# but containerd was not started / enabled
+- name: flush handlers
+  meta: flush_handlers
+
+- name: ensure containerd is started and enabled
+  service:
+    name: containerd
+    enabled: yes
+    state: started