Added appropriate logic for empty values.

Author: Andrew J Huffman

templates/resolv.conf.j2

@@ -1,17 +1,19 @@
 # {{ ansible_managed }}
 
-{% if resolv_search %}
+{% if resolv_search | length > 0 %}
 search {{ resolv_search|join(' ') }}
 {% endif %}
-{% if resolv_domain %}
+{% if resolv_domain != "" %}
 domain {{ resolv_domain }}
 {% endif %}
-{% for i in resolv_nameservers %}
-nameserver {{ i }}
+{% for ns in resolv_nameservers %}
+nameserver {{ ns }}
 {% endfor %}
-{% for i in resolv_sortlist %}
-sortlist {{ i }}
+{% if resolv_sortlist | length > 0 %}
+{% for sl in resolv_sortlist %}
+sortlist {{ sl }}
 {% endfor %}
-{% if resolv_options %}
+{% endif %}
+{% if resolv_options | length > 0 %}
 options {{ resolv_options|join(' ') }}
 {% endif %}