Add a cron job for Mailman 3

roles/mailman/files/periodic.py

@@ -0,0 +1,23 @@
+#!/usr/bin/python3
+
+import os
+import sys
+
+from mailman.core.initialize import initialize
+from mailman.config import config
+from mailman.interfaces.pending import IPendings
+from mailman.interfaces.requests import IListRequests, RequestType
+from zope.component import getUtility
+
+
+def clean_pended():
+    getUtility(IPendings).evict()
+
+
+if __name__ == '__main__':
+    if os.getuid() == 0:
+        print("This script must be run as the mailman user", file=sys.stderr)
+        sys.exit(1)
+    initialize(config_path="/etc/mailman.cfg")
+    clean_pended()
+    config.db.commit()