Add node specific fail2ban config

nodes/ticket.lysator.liu.se.yaml

+---
+lysnetwork::fail2ban::config:
+    DEFAULT:
+      banaction: iptables-multiport
+      ignoreip: 127.0.0.0/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 130.236.254.0/24
+      backend: systemd
+    sshd:
+      enabled: true
+      findtime: 3600
+      maxretry: 5
+    sshlongterm:
+      banaction: iptables-multiport
+      port: ssh
+      logpath: "%(sshd_log)s"
+      maxretry: 30
+      findtime: 259200
+      bantime: 608400
+      enabled: true
+      filter: sshd
+    request-tracker:
+        enabled: true
+        filter: request-tracker
+        logpath: /var/log/syslog