fail CI if the change includes model changes that are missing migrations

Makefile

@@ -382,6 +382,7 @@ test:
 		. $(VENV_BASE)/awx/bin/activate; \
 	fi; \
 	py.test -n auto $(TEST_DIRS)
+	awx-manage check_migrations --dry-run --check  -n 'vNNN_missing_migration_file'
 
 test_combined: test_ansible test
 

awx/main/management/commands/check_migrations.py

@@ -0,0 +1,12 @@
+from django.db import connections
+from django.db.backends.sqlite3.base import DatabaseWrapper
+from django.core.management.commands.makemigrations import Command as MakeMigrations
+
+
+class Command(MakeMigrations):
+
+    def execute(self, *args, **options):
+        settings = connections['default'].settings_dict.copy()
+        settings['ENGINE'] = 'sqlite3'
+        connections['default'] = DatabaseWrapper(settings)
+        return MakeMigrations().execute(*args, **options)