Provide option for kubernetes to watch only a specific namespace (#433)

kustomize/overlays/cluster-role/cluster-role.yml

@@ -0,0 +1,28 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: services-watcher
+rules:
+  - apiGroups: [""]
+    resources: ["services"]
+    verbs: ["watch","list"]
+  - apiGroups: ["apps"]
+    resources: ["statefulsets"]
+    verbs: ["watch","list","get","update"]
+  - apiGroups: ["apps"]
+    resources: ["statefulsets/scale"]
+    verbs: ["get","update"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: mc-router-services-watcher
+subjects:
+  - kind: ServiceAccount
+    name: mc-router
+    namespace: default
+roleRef:
+  kind: ClusterRole
+  name: services-watcher
+  apiGroup: rbac.authorization.k8s.io

kustomize/overlays/cluster-role/kustomization.yml

@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../../base
+  - cluster-role.yml

kustomize/overlays/role/kustomization.yml

@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../../base
+  - role.yml

kustomize/overlays/role/role.yml

@@ -0,0 +1,28 @@
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: services-watcher
+rules:
+  - apiGroups: [""]
+    resources: ["services"]
+    verbs: ["watch","list"]
+  - apiGroups: ["apps"]
+    resources: ["statefulsets"]
+    verbs: ["watch","list","get","update"]
+  - apiGroups: ["apps"]
+    resources: ["statefulsets/scale"]
+    verbs: ["get","update"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: mc-router-services-watcher
+subjects:
+  - kind: ServiceAccount
+    name: mc-router
+    namespace: default
+roleRef:
+  kind: Role
+  name: services-watcher
+  apiGroup: rbac.authorization.k8s.io