Fix for Mininet taking a long time to initialize

Change-Id: I51c47a0ee14812f219e5765e952c07fc0f9060d4
diff --git a/mininet/templates/deployment.yaml b/mininet/templates/deployment.yaml
index 571e024..0f1807d 100644
--- a/mininet/templates/deployment.yaml
+++ b/mininet/templates/deployment.yaml
@@ -38,8 +38,8 @@
     spec:
       containers:
         - name: {{ .Chart.Name }}
-          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          image: "{{ .Values.global.registry }}{{ .Values.images.mininet.repository }}:{{ tpl .Values.images.mininet.tag . }}"
+          imagePullPolicy: {{ .Values.images.mininet.pullPolicy }}
           args: ["/toposcripts/topo.py"]
           stdin: true
           tty: true