Address standalone kubelet config case

Also place in global vars and do not repeat the kube_*_config_dir
and kube_namespace vars for better code maintainability and UX.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

roles/kubernetes-apps/ansible/defaults/main.yml

@@ -1,6 +1,3 @@
-kube_config_dir: /etc/kubernetes
-kube_namespace: kube-system
-
 # Versions
 kubedns_version: 1.9
 kubednsmasq_version: 1.3

roles/kubernetes-apps/ansible/tasks/calico-policy-controller.yml

@@ -8,6 +8,6 @@
     name: "calico-policy-controller"
     kubectl: "{{bin_dir}}/kubectl"
     filename: "{{kube_config_dir}}/calico-policy-controller.yml"
-    namespace: "{{kube_namespace}}"
+    namespace: "{{system_namespace}}"
     resource: "rs"
   when: inventory_hostname == groups['kube-master'][0]

roles/kubernetes-apps/ansible/tasks/main.yaml

@@ -11,7 +11,7 @@
 - name: Kubernetes Apps | Start Resources
   kube:
     name: kubedns
-    namespace: "{{ kube_namespace }}"
+    namespace: "{{ system_namespace }}"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/ansible/templates/calico-policy-controller.yml.j2

@@ -2,7 +2,7 @@ apiVersion: extensions/v1beta1
 kind: ReplicaSet
 metadata:
   name: calico-policy-controller
-  namespace: {{ kube_namespace }}
+  namespace: {{ system_namespace }}
   labels:
     k8s-app: calico-policy
     kubernetes.io/cluster-service: "true"
@@ -15,7 +15,7 @@ spec:
   template:
     metadata:
       name: calico-policy-controller
-      namespace: kube-system
+      namespace: {{system_namespace}}
       labels:
         kubernetes.io/cluster-service: "true"
         k8s-app: calico-policy

roles/kubernetes-apps/ansible/templates/kubedns-rc.yml

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: ReplicationController
 metadata:
   name: kubedns
-  namespace: {{ kube_namespace }}
+  namespace: {{ system_namespace }}
   labels:
     k8s-app: kubedns
     version: v19

roles/kubernetes-apps/ansible/templates/kubedns-svc.yml

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: kubedns
-  namespace: {{ kube_namespace }}
+  namespace: {{ system_namespace }}
   labels:
     k8s-app: kubedns
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/network_plugin/canal/tasks/main.yaml

@@ -3,15 +3,15 @@
   kube:
     name: "canal-config"
     kubectl: "{{bin_dir}}/kubectl"
-    filename: "/etc/kubernetes/canal-config.yaml"
+    filename: "{{kube_config_dir}}/canal-config.yaml"
     resource: "configmap"
-    namespace: "kube-system"
+    namespace: "{{system_namespace}}"
 
 - name: Start flannel and calico-node
   run_once: true
   kube:
     name: "canal-node"
     kubectl: "{{bin_dir}}/kubectl"
-    filename: "/etc/kubernetes/canal-node.yaml"
+    filename: "{{kube_config_dir}}/canal-node.yaml"
     resource: "ds"
-    namespace: "kube-system"
+    namespace: "{{system_namespace}}"