NAT-329: fixed iteration over LAGMember list

gso/utils/helpers.py

@@ -279,15 +279,12 @@ def validate_interface_name_list(interface_name_list: list) -> list:
 
     Returns:
     -------
-    list: The list of interface names if all match was successfull.
-                 Otherwise it will throw a ValueError exception.
+    list: The list of interface names if all match was successful, otherwise it will throw a ValueError exception.
     """
     pattern = re.compile(r"^(ge|et|xe)-[0-9]/[0-9]/[0-9]$")
-    for interface_name in interface_name_list:
-        if not bool(pattern.match(interface_name)):
-            error_msg = (
+    for interface in interface_name_list:
+        if not bool(pattern.match(interface.interface_name)):
+            raise ValueError(
                 f"Invalid interface name. The interface name should be of format: "
-                f"xe-1/0/0. Got: [{interface_name}]")
-            raise ValueError(error_msg)
-
+                f"xe-1/0/0. Got: [{interface.interface_name}]")
     return interface_name_list