Fix for Mininet taking a long time to initialize

Change-Id: I51c47a0ee14812f219e5765e952c07fc0f9060d4
diff --git a/mininet/values.yaml b/mininet/values.yaml
index 8b5e93a..1515347 100644
--- a/mininet/values.yaml
+++ b/mininet/values.yaml
@@ -21,10 +21,14 @@
 nameOverride: ""
 fullnameOverride: ""
 
-image:
-  repository: ciena/mininet
-  tag: ubuntu-bionic
-  pullPolicy: IfNotPresent
+images:
+  mininet:
+    repository: 'andybavier/mininet'
+    tag: '{{ .Chart.AppVersion }}'
+    pullPolicy: IfNotPresent
+
+global:
+  registry: ''
 
 resources: {}