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.

utils/get_test_modules.py

@@ -62,8 +62,7 @@ def get_plugins_from_playbook(playbook):
             return []
         except yaml.parser.ParserError:  # If not a YAML/JSON file.
             return []
-        else:
-            return data if data else []
+        return data if data else []
 
     data = load_playbook(playbook)
     task_blocks = [t.get("tasks", []) if "tasks" in t else [] for t in data]

utils/templates/ipamodule+member.py.in

@@ -127,8 +127,7 @@ def find_$name(module, name):
     except Exception:  # pylint: disable=broad-except
         # An exception is raised if $name name is not found.
         return None
-    else:
-        return _result["result"]
+    return _result["result"]
 
 
 def gen_args(PARAMETER1):

utils/templates/ipamodule.py.in

@@ -103,8 +103,7 @@ def find_$name(module, name):
     except Exception:  # pylint: disable=broad-except
         # An exception is raised if $name name is not found.
         return None
-    else:
-        return _result["result"]
+    return _result["result"]
 
 
 def gen_args(PARAMETER1, PARAMETER2):