pylint: Fix warning 'unnecessary "else" after "return"'

Recent pylint versions warn against the use of an 'else' in a
'try-except' block if using a 'return' on the 'except' part is is the
idom used by ansible-freeipa when retrieving IPA data objects.

This change removes the usage of the 'else:' in such cases, and modify
the templates so that new modules do not have the same issue in the
future.

plugins/modules/ipaautomountmap.py

@@ -126,8 +126,7 @@ class AutomountMap(IPAAnsibleModule):
             )
         except Exception:  # pylint: disable=broad-except
             return None
-        else:
-            return response["result"]
+        return response["result"]
 
     def get_indirect_map_keys(self, location, name):
         """Check if 'name' is an indirect map for 'parentmap'."""