feat: ignore authentication failures from Greenbone

tasks/install_checkmk_plugins.yml

@@ -87,6 +87,9 @@
 
       /var/log/secur*
        I Call Trace.*ANSIBLE MANAGED BLOCK
+       I rhost=sdvgreenbone.slub-dresden.de
+       I Failed password for invalid user * from 212.201.58.52
+       I Failed password for * from 212.201.58.52
        W Call Trace
 
 - name: configure NRPE/MRPE plugins