Add check mode simple logic to DecortController.lb_update method

module_utils/decort_utils.py

@@ -4468,6 +4468,15 @@ class DecortController(object):
     def lb_update(self,prime,front_ha_ip,back_ha_ip,lb_backends=[],lb_frontends=[],mod_backends=[],mod_servers=[],mod_frontends=[]):
         
         self.result['waypoints'] = "{} -> {}".format(self.result['waypoints'], "lb_update")
+
+        if self.amodule.check_mode:
+            result_msg = 'lb_update() in check mode: No changing.'
+            if self.result.get('msg'):
+                self.result['msg'] += f'\n{result_msg}'
+            else:
+                self.result['msg'] = result_msg
+            return
+
         #lists from module and cloud
         mod_backs_list = [back['name'] for back in mod_backends]
         lb_backs_list = [back['name'] for back in lb_backends]