Fix systemd reload and calico unit

roles/docker/tasks/main.yml

@@ -47,6 +47,8 @@
   with_items: docker_package_info.pkgs
   when: docker_package_info.pkgs|length > 0
 
+- meta: flush_handlers
+
 - name: ensure docker service is started and enabled
   service:
     name: "{{ item }}"