add namespace.yaml to base kustomization

base/kustomization.yaml

@@ -8,4 +8,5 @@ resources:
   - networkpolicy-default.yaml
   - configmap.yaml
   - secret.yaml
-  - rbac.yaml
+  - rbac.yaml
+  - namespace.yaml

base/namespace.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: intern-workspace
+  annotations:
+    argocd.argoproj.io/managed-by: argocd