[VOL-3288] Upgrade free-radius to 3.0.21

Change-Id: Ib2f13707c6c936826fddbe13807fcfa66745de39
diff --git a/freeradius/values.yaml b/freeradius/values.yaml
index 4707318..9608a23 100644
--- a/freeradius/values.yaml
+++ b/freeradius/values.yaml
@@ -23,6 +23,6 @@
 images:
   radius:
     registry: ""
-    repository: "tpdock/freeradius"
+    repository: "freeradius/freeradius-server"
     tag: "{{ .Chart.AppVersion }}"
     pullPolicy: "{{ .Values.defaults.image_pullPolicy }}"