move network-environment template into node role, required by kubelet

roles/network_plugin/tasks/main.yml

@@ -4,9 +4,6 @@
   when: ( kube_network_plugin is defined and kube_network_plugin == "calico" and kube_network_plugin == "flannel" ) or
         kube_network_plugin is not defined
 
-- name: Write network-environment
-  template: src=network-environment.j2 dest=/etc/network-environment mode=640
-
 - include: flannel.yml
   when: kube_network_plugin == "flannel"