prometheus: do not consider ssh rate limiting errors (#60171)

prometheus-entrouvert-exporter/prometheus-system-exporter.py

@@ -25,6 +25,9 @@ JOURNALD_IGNORED_ERRORS = {
     'dovecot.service': [
         'Connection lost to LDAP server, reconnecting',
     ],
+    'ssh.service': [
+        'maximum authentication attempts exceeded for root',
+    ],
     '': [  # match all services (useful for ovpn*)
         'Connection reset, restarting [0]',
     ],