fix dnsmasq

files/dnsmasq/dnsmasq.conf.j2

 {% macro setDomainAndKMS(br, domain) %}
 ## Using domain {{domain}}
-{% if br.dhcp.externalDomain is defined and br.dhcp.externalDomain %}
 domain={{domain}},{{br.address}}
-{% else %}
-domain={{domain}},{{br.address}},local
+{% if br.dhcp.externalDomain is defined and br.dhcp.externalDomain %}
+local=/{{domain}}/
 {% endif %}
 
 {% if dnsmasq.kms is defined and dnsmasq.kms %}