set n_try to 5 for default

csst_common/utils/_retry.py

@@ -9,7 +9,11 @@ Modified-History:
 """
 
 
-def retry(func, n_try=3, *args, **kwargs):
+def retry(func, *args, **kwargs):
+    if "n_try" in kwargs.keys():
+        n_try = kwargs.pop("n_try")
+    else:
+        n_try = 5
     # is DFS?
     try:
         assert func.__self__.__class__.__module__.startswith("csst_dfs_api"), func