[VOL-4247] Using latest upstream ONOS chart and removing custom onos-config-loader from the voltha-infra-chart

Change-Id: I7560442c0c2e57d0a589ce00b1c07ca6b7aa6777
diff --git a/voltha/templates/ofagent-deploy.yaml b/voltha/templates/ofagent-deploy.yaml
index dfa14ce..ef04d2d 100644
--- a/voltha/templates/ofagent-deploy.yaml
+++ b/voltha/templates/ofagent-deploy.yaml
@@ -88,9 +88,11 @@
                 fieldPath: metadata.labels['app.kubernetes.io/name']
         args:
         - "/app/ofagent"
+        {{- if eq (len .Values.services.controller) 0 }}
         {{- range $controllers.controllers }}
         - "--controller={{ . }}"
         {{- end }}
+        {{- end }}
         {{- range .Values.services.controller }}
         - "--controller={{ tpl .address $ }}"
         {{- end }}