Use more generic name for NFD features host directory volume

Before adding kustomize file changing it from feature hooks directory
to feature files directory (which is needed to support scalability
testing with fake devices).

Signed-off-by: Eero Tamminen <eero.t.tamminen@intel.com>

Author: eero-t

deployments/gpu_plugin/base/intel-gpu-plugin.yaml

@@ -22,7 +22,7 @@ spec:
           allowPrivilegeEscalation: false
         volumeMounts:
         - mountPath: /etc/kubernetes/node-feature-discovery/source.d/
-          name: nfd-source-hooks
+          name: nfd-features
       containers:
       - name: intel-gpu-plugin
         env:
@@ -54,7 +54,7 @@ spec:
       - name: kubeletsockets
         hostPath:
           path: /var/lib/kubelet/device-plugins
-      - name: nfd-source-hooks
+      - name: nfd-features
         hostPath:
           path: /etc/kubernetes/node-feature-discovery/source.d/
           type: DirectoryOrCreate