Added tests to new suppressions

Author: konradwojda

pylint_django/tests/input/external_drf_noerror_serializer.py

@@ -9,3 +9,7 @@
 class TestSerializerSubclass(serializers.ModelSerializer):
     class Meta:
         pass
+
+
+class TestSerializer(serializers.Serializer):
+    pass

pylint_django/tests/input/func_noerror_docstrings.py

@@ -0,0 +1,9 @@
+# pylint: disable=missing-class-docstring, missing-module-docstring, too-few-public-methods, missing-function-docstring, no-method-argument, no-self-use, too-many-function-args
+class Parent:
+    def test():
+        return 0
+
+class ChildDoc(Parent):
+    def test():
+        """Difference"""
+        return super().test()