Move set_facts to kubespray-defaults defaults

These facts can be generated in defaults with a performance
boost.

Also cleaned up duplicate etcd var names.

roles/network_plugin/canal/templates/cni-canal.conf.j2

@@ -3,7 +3,7 @@
   "type": "flannel",
   "delegate": {
     "type": "calico",
-    "etcd_endpoints": "{{ etcd_access_endpoint }}",
+    "etcd_endpoints": "{{ etcd_access_addresses }}",
     "log_level": "info",
     "policy": {
       "type": "k8s"