Stop templating kube-system namespace and creating it (#2545)

Kubernetes makes this namespace automatically, so there is
no need for kubespray to manage it.

roles/network_plugin/calico/templates/calico-config.yml.j2

@@ -2,7 +2,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: calico-config
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 data:
   etcd_endpoints: "{{ etcd_access_addresses }}"
   etcd_ca: "/calico-secrets/ca_cert.crt"

roles/network_plugin/calico/templates/calico-cr.yml.j2

@@ -3,7 +3,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups: [""]
     resources:

roles/network_plugin/calico/templates/calico-crb.yml.j2

@@ -10,4 +10,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/calico/templates/calico-node-sa.yml.j2

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/network_plugin/calico/templates/calico-node.yml.j2

@@ -6,7 +6,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: calico-node
 spec: