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/network_plugin/cilium/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Cilium | Start Resources
   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}}"
@@ -11,7 +11,7 @@
   when: inventory_hostname == groups['kube-master'][0] and not item|skipped
 
 - name: Cilium | Wait for pods to run
-  command: "{{bin_dir}}/kubectl -n {{system_namespace}} get pods -l k8s-app=cilium -o jsonpath='{.items[?(@.status.containerStatuses[0].ready==false)].metadata.name}'"
+  command: "{{bin_dir}}/kubectl -n kube-system get pods -l k8s-app=cilium -o jsonpath='{.items[?(@.status.containerStatuses[0].ready==false)].metadata.name}'"
   register: pods_not_ready
   until: pods_not_ready.stdout.find("cilium")==-1
   retries: 30