Use dict_diff instead of sets to take diff lag members (#66126)

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>
(cherry picked from commit cb46e5f06b)

Add nxos_lag_interfaces fix changelog

Signed-off-by: NilashishC <nilashishchakraborty8@gmail.com>

changelogs/fragments/66126_fix_nxos_lag_interfaces_idempotence.yaml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+  - Fix idempotence issue in nxos_lag_interfaces with Python 3 (https://github.com/ansible/ansible/pull/66126)

lib/ansible/module_utils/network/nxos/config/lag_interfaces/lag_interfaces.py

@@ -14,9 +14,9 @@ from __future__ import absolute_import, division, print_function
 __metaclass__ = type
 
 from ansible.module_utils.network.common.cfg.base import ConfigBase
-from ansible.module_utils.network.common.utils import to_list, remove_empties
+from ansible.module_utils.network.common.utils import to_list, remove_empties, dict_diff, search_obj_in_list
 from ansible.module_utils.network.nxos.facts.facts import Facts
-from ansible.module_utils.network.nxos.utils.utils import get_interface_type, normalize_interface, search_obj_in_list
+from ansible.module_utils.network.nxos.utils.utils import normalize_interface
 
 
 class Lag_interfaces(ConfigBase):
@@ -184,13 +184,22 @@ class Lag_interfaces(ConfigBase):
                 commands.extend(self.del_all_commands(h))
         return commands
 
-    def diff_list_of_dicts(self, w, h):
+    def diff_list_of_dicts(self, want, have):
+        if not want:
+            want = []
+
+        if not have:
+            have = []
+
         diff = []
-        set_w = set(tuple(d.items()) for d in w)
-        set_h = set(tuple(d.items()) for d in h)
-        difference = set_w.difference(set_h)
-        for element in difference:
-            diff.append(dict((x, y) for x, y in element))
+        for w_item in want:
+            h_item = search_obj_in_list(w_item['member'], have, key='member') or {}
+            delta = dict_diff(h_item, w_item)
+            if delta:
+                if 'member' not in delta.keys():
+                    delta['member'] = w_item['member']
+                diff.append(delta)
+
         return diff
 
     def intersect_list_of_dicts(self, w, h):