fix: retry_on_transient_error should be int (#113)

Co-authored-by: Han Wang <wang_han@iapcm.ac.cn>

dpgen2/utils/step_config.py

@@ -41,13 +41,13 @@ def variant_executor():
 def template_conf_args():
     doc_image = 'The image to run the step.'
     doc_timeout = 'The time limit of the OP. Unit is second.'
-    doc_retry_on_transient_error = 'Retry the step if a TransientError is raised.'
+    doc_retry_on_transient_error = 'The number of retry times if a TransientError is raised.'
     doc_timeout_as_transient_error = 'Treat the timeout as TransientError.'
     doc_envs = 'The environmental variables.'
     return [
         Argument("image", str, optional=True, default=default_image, doc=doc_image),
         Argument("timeout", int, optional=True, default=None, doc=doc_timeout),
-        Argument("retry_on_transient_error", bool, optional=True, default=None, doc=doc_retry_on_transient_error),
+        Argument("retry_on_transient_error", int, optional=True, default=None, doc=doc_retry_on_transient_error),
         Argument("timeout_as_transient_error", bool, optional=True, default=False, doc=doc_timeout_as_transient_error),
         Argument("envs", dict, optional=True, default=None, doc=doc_envs),
     ]