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

host_vars/web-05.oopen.de/web-05-common.yml

@@ -85,7 +85,7 @@ 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:
   - ~.
   - oopen.de
@@ -95,8 +95,7 @@ resolved_dnssec: false
 # dns.as250.net: 194.150.168.168
 #
 resolved_fallback_nameserver:
-   - 194.150.168.168
-
+  - 194.150.168.168
 
 
 # ---
@@ -145,4 +144,3 @@ git_firewall_repository:
 root_user:
   name: root
   password: $6$J1ssJfdshf/$mknQEPDcW4HN5.wFfawbamamywI7F7fhdZmaR1abNrc4DA7DNRx766lz3ygf9YV3gcmRq3QhJ3fBVlkwGMCvq.
-