Change freedns provider name on inadyn upgrade

src/freedombone-utils-web

         return
     fi
 
+    if [[ "$DDNS_PROVIDER" == "default@freedns.afraid.org" ]]; then
+        DDNS_PROVIDER='freedns'
+        write_config_param DDNS_PROVIDER "$DDNS_PROVIDER"
+    fi
+
     { echo 'period          = 300';
       echo 'user-agent      = Mozilla/5.0';
       echo '';