Change radius secret to match freeradius's default for debugging

src/lib/dhcpsrv/radius_host_data_source.cc

@@ -103,7 +103,7 @@ RadiusHostDataSource(const DatabaseConnection::ParameterMap& parameters) {
     if (res != 0) {
          isc_throw(isc::Exception, "Failed to configure Radius retries");
     }
-    res = rc_add_config(rh, "authserver", "127.0.0.1:1812:mysecret", NULL, 0);
+    res = rc_add_config(rh, "authserver", "127.0.0.1:1812:testing123", NULL, 0);
     if (res != 0) {
          isc_throw(isc::Exception, "Failed to configure Radius authserver");
     }