ensure docker.service.d exists

roles/network_plugin/flannel/tasks/main.yml

@@ -44,6 +44,10 @@
     - restart docker
   when: ansible_os_family != "CoreOS"
 
+- name: Flannel | Create docker service path for CoreOS
+  file: path=/etc/systemd/system/docker.service.d state=directory
+  when: ansible_os_family == "CoreOS"
+
 - name: Flannel | Create docker dropin for CoreOS
   template:
     src: docker-systemd