Merge pull request #41014 from cachedout/issue_40937

Ensure strings in decorator

salt/utils/decorators/__init__.py

@@ -245,6 +245,14 @@ def memoize(func):
 
     @wraps(func)
     def _memoize(*args, **kwargs):
+        str_args = []
+        for arg in args:
+            if not isinstance(arg, six.string_types):
+                str_args.append(str(arg))
+            else:
+                str_args.append(arg)
+        args = str_args
+
         args_ = ','.join(list(args) + ['{0}={1}'.format(k, kwargs[k]) for k in sorted(kwargs)])
         if args_ not in cache:
             cache[args_] = func(*args, **kwargs)