Adds parents to mutually_exclusive with src for *_config modules (#33957)

* mutually_exclusive add - ios_config parents works with lines by not src

* mutually_execlusive parents,src added to all other net modules

* tests for mutually_exclusive parents,src and whitespce removal

lib/ansible/modules/network/cloudengine/ce_config.py

@@ -291,7 +291,8 @@ def main():
 
     argument_spec.update(ce_argument_spec)
 
-    mutually_exclusive = [('lines', 'src')]
+    mutually_exclusive = [('lines', 'src'),
+                          ('parents', 'src')]
 
     required_if = [('match', 'strict', ['lines']),
                    ('match', 'exact', ['lines']),