add resolv.conf task

roles/host_maintenance/templates/resolv.conf.j2

@@ -0,0 +1,17 @@
+# templates/resolv.conf.j2
+# Managed by Ansible - DO NOT EDIT MANUALLY
+# Changes will be overwritten on next Ansible run
+
+{% if resolv_conf.nameservers is defined and resolv_conf.nameservers | length > 0 %}
+{% for ns in resolv_conf.nameservers %}
+nameserver {{ ns }}
+{% endfor %}
+{% endif %}
+
+{% if resolv_conf.search_domains is defined and resolv_conf.search_domains | length > 0 %}
+search {{ resolv_conf.search_domains | join(' ') }}
+{% endif %}
+
+{% if resolv_conf.resolver_options is defined and resolv_conf.resolver_options | length > 0 %}
+options {{ resolv_conf.resolver_options | join(' ') }}
+{% endif %}