fix(vsphere-csi): remove namespace env variable and set namespace as kube-system (#9046)

Signed-off-by: eminaktas <eminaktas34@gmail.com>
Co-authored-by: Yasin Taha Erol <yasintahaerol@gmail.com>

Co-authored-by: Yasin Taha Erol <yasintahaerol@gmail.com>

roles/kubernetes-apps/csi_driver/vsphere/templates/vsphere-csi-node.yml.j2

@@ -57,7 +57,7 @@ spec:
         imagePullPolicy: {{ k8s_image_pull_policy }}
         args:
           - "--fss-name=internal-feature-states.csi.vsphere.vmware.com"
-          - "--fss-namespace=$(CSI_NAMESPACE)"
+          - "--fss-namespace=kube-system"
           - "--use-gocsi=false"
         imagePullPolicy: "Always"
         env:
@@ -79,10 +79,6 @@ spec:
           value: "true"
         - name: LOGGER_LEVEL
           value: "PRODUCTION" # Options: DEVELOPMENT, PRODUCTION
-        - name: CSI_NAMESPACE
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.namespace
         - name: NODEGETINFO_WATCH_TIMEOUT_MINUTES
           value: "1"
         securityContext: