SEBA-74: Allow connecting to RADIUS server via hostname instead of IP

Change-Id: I16dd38d0fc0da36bf4e9e9292abf51ca0bfc4d8a
diff --git a/src/main/java/org/opencord/aaa/AaaConfig.java b/src/main/java/org/opencord/aaa/AaaConfig.java
index 8c7aa47..4124e80 100644
--- a/src/main/java/org/opencord/aaa/AaaConfig.java
+++ b/src/main/java/org/opencord/aaa/AaaConfig.java
@@ -37,6 +37,7 @@
  */
 public class AaaConfig extends Config<ApplicationId> {
 
+    private static final String RADIUS_HOST = "radiusHost";
     private static final String RADIUS_IP = "radiusIp";
     private static final String RADIUS_SERVER_PORT = "radiusServerPort";
     private static final String RADIUS_MAC = "radiusMac";
@@ -123,6 +124,10 @@
         return (BasicElementConfig) setOrClear(NAS_IP, ip);
     }
 
+    public String radiusHostName() {
+        return getStringProperty(RADIUS_HOST, null);
+    }
+
     /**
      * Returns the RADIUS server ip.
      *