increase node spawn timeout to avoid failure

end2end-tests/tests/common/mod.rs

@@ -233,9 +233,9 @@ fn spawn_full_node(
 
     let timeout =
         if let Ok(duration_string) = std::env::var("DUNITER_END2END_TESTS_SPAWN_NODE_TIMEOUT") {
-            duration_string.parse().unwrap_or(4)
+            duration_string.parse().unwrap_or(10)
         } else {
-            4
+            10
         };
 
     wait_until_log_line(