chore(ansible): clean up host_vars YAML and normalize mail text blocks

host_vars/ga-st-mm.ga.netz/ga-st-mm-common.yml

@@ -88,7 +88,7 @@ resolved_nameserver:
 # If there are more than one search domains, then specify them here in the order in which
 # the resolver should also search them
 #
-#resolved_domains: []
+# resolved_domains: []
 resolved_domains:
   - ~.
   - ga.netz
@@ -99,7 +99,7 @@ resolved_dnssec: false
 # dns.as250.net: 194.150.168.168
 #
 resolved_fallback_nameserver:
-   - 192.168.11.3
+  - 192.168.11.3
 
 
 # ---
@@ -209,7 +209,6 @@ sudo_users:
 # ---
 
 
-
 # ---
 # vars used by roles/common/tasks/config_files_mailsystem_scripts.yml
 # ---