fix: ignore SSH authentication failures if they are caused by Greenbone scans

tasks/install_checkmk_plugins.yml

@@ -70,6 +70,7 @@
       #
       # documentation: https://checkmk.de/cms_legacy_logfiles.html
       /var/log/auth.log
+       I 212.201.58.52
        W authentication failure
        W Failed password
        W Accepted password for