tests: Add pylint-disable

Django's View class doesn't implement a head() method but instead uses
self.head = ... if the child class doesn't override it. This leads to
the method-hidden checker being triggered.

Author: atodorov

pylint_django/tests/input/func_noerror_classviews.py

@@ -58,7 +58,7 @@ def delete(self, request, *args, **kwargs):
 
 
 class JsonHeadView(View):
-    def head(self, request, *args, **kwargs):
+    def head(self, request, *args, **kwargs):  # pylint: disable=method-hidden
         # do something with objects but don't use
         # self or request
         return JsonResponse({'rc': 0, 'response': 'ok'})