Use nodePortPrefix variable in VNFSDK service template

Issue-ID: VNFSDK-283
Change-Id: I3e84891ed2faaccb50c5d07f0ad620634a091c0d
Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>
diff --git a/kubernetes/vnfsdk/templates/service.yaml b/kubernetes/vnfsdk/templates/service.yaml
index f6208cf..c683d4c 100644
--- a/kubernetes/vnfsdk/templates/service.yaml
+++ b/kubernetes/vnfsdk/templates/service.yaml
@@ -27,7 +27,7 @@
   ports:
     {{if eq .Values.service.type "NodePort" -}}
     - port: {{ .Values.service.internalPort }}
-      nodePort: {{ .Values.global.nodePortPrefix | default "302" }}{{ .Values.service.nodePort }}
+      nodePort: {{ .Values.global.nodePortPrefix | default .Values.nodePortPrefix }}{{ .Values.service.nodePort }}
     {{- else -}}
     - port: {{ .Values.service.externalPort }}
       targetPort: {{ .Values.service.internalPort }}