Add more delay for test program

tests/app/5gc-init.c

@@ -70,7 +70,7 @@ int app_initialize(const char *const argv[])
      * 
      * If freeDiameter is not used, it uses a delay of less than 4 seconds.
      */
-    ogs_msleep(2000);
+    ogs_msleep(3000);
 
     return OGS_OK;;
 }