Force hardlink for calico/canal certs

Fixes: #669

roles/network_plugin/calico/tasks/main.yml

@@ -18,6 +18,7 @@
     src: "{{ etcd_cert_dir }}/{{ item.s }}"
     dest: "{{ calico_cert_dir }}/{{ item.d }}"
     state: hard
+    force: yes
   with_items:
     - {s: "ca.pem", d: "ca_cert.crt"}
     - {s: "node.pem", d: "cert.crt"}

roles/network_plugin/canal/tasks/main.yml

@@ -18,6 +18,7 @@
     src: "{{ etcd_cert_dir }}/{{ item.s }}"
     dest: "{{ canal_cert_dir }}/{{ item.d }}"
     state: hard
+    force: yes
   with_items:
     - {s: "ca.pem", d: "ca_cert.crt"}
     - {s: "node.pem", d: "cert.crt"}