tests: ensure django-admin is installed

Author: ju5t

tox.ini

@@ -4,20 +4,23 @@ envlist = setup,flake8
 [testenv]
 whitelist_externals =
   find
+allowlist_externals =
+  find
 deps =
-	django-nose
-	mock
-	cov-core
-	coverage
-	requests
+  django-nose
+  mock
+  cov-core
+  coverage
+  requests
   django
+  django-admin
   djangorestframework
 setenv =
     DJANGO_SETTINGS_MODULE=tests.settings
-		PYTHONPATH={toxinidir}/drf_simplepermissions/
+	PYTHONPATH={toxinidir}/drf_simplepermissions/
 commands =
 	find . -type f -name "*.pyc" -delete
-	django-admin.py test
+	django-admin test
 
 [testenv:flake8]
 deps = flake8