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/kubernetes-apps/policy_controller/calico/tasks/main.yml

@@ -12,7 +12,7 @@
     name: calico-policy-controller
     kubectl: "{{bin_dir}}/kubectl"
     resource: rs
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     state: absent
   run_once: true
 
@@ -32,7 +32,7 @@
 - name: Start of Calico kube controllers
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-controllers.yml.j2

@@ -2,7 +2,7 @@ apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: calico-kube-controllers
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: calico-kube-controllers
     kubernetes.io/cluster-service: "true"
@@ -15,7 +15,7 @@ spec:
   template:
     metadata:
       name: calico-kube-controllers
-      namespace: {{ system_namespace }}
+      namespace: kube-system
       labels:
         kubernetes.io/cluster-service: "true"
         k8s-app: calico-kube-controllers

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-cr.yml.j2

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

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-crb.yml.j2

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

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-sa.yml.j2

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