Adds /modify for python repository api.

[noissue]

Author: gerrod3

pulp_python/app/viewsets.py

@@ -3,6 +3,7 @@
 
 from pulpcore.plugin import viewsets as core_viewsets
 from pulpcore.plugin.models import RepositoryVersion
+from pulpcore.plugin.actions import ModifyRepositoryActionMixin
 from pulpcore.plugin.serializers import (
     AsyncOperationResponseSerializer,
     RepositorySyncURLSerializer,
@@ -14,7 +15,7 @@
 from pulp_python.app import tasks
 
 
-class PythonRepositoryViewSet(core_viewsets.RepositoryViewSet):
+class PythonRepositoryViewSet(core_viewsets.RepositoryViewSet, ModifyRepositoryActionMixin):
     """
     A ViewSet for PythonRepository.
     """