remove default source address to avoid bug when not defined

roles/sysutils/defaults/main.yml

@@ -34,8 +34,7 @@ sysutils_firewall_enabled: true
 sysutils_ferm_rules_filename: sysutils
 sysutils_ferm_input_rules:
   # munin
-  - saddr: "{{ groups['monitor'] | map('extract', hostvars, ['ansible_default_ipv4', 'address']) | list }}"
-    proto:
+  - proto:
       - tcp
     dport:
       - 4949