Revert "*: providers and sources -> channels, PolicyModel to PolicyBindingModel that uses custom M2M through"

This reverts commit 7ed3ceb960.

passbook/providers/app_gw/urls.py

@@ -0,0 +1,10 @@
+"""passbook app_gw urls"""
+from django.urls import path
+
+from passbook.providers.app_gw.views import K8sManifestView
+
+urlpatterns = [
+    path(
+        "<int:provider>/k8s-manifest/", K8sManifestView.as_view(), name="k8s-manifest"
+    ),
+]