add template example for dnsmasq hosts list

Can be useful here: https://blog.amartynov.ru/archives/dnsmasq-docker-service-discovery/
Or with this image: https://github.com/andyshinn/docker-dnsmasq

Author: lanwen

templates/dnsmasq.hosts.conf.tmpl

@@ -0,0 +1,7 @@
+{{$domain := "docker.company.com"}}
+{{range $key, $value := .}}
+# {{ $value.Name }} ({{$value.ID}} from {{$value.Image.Repository}})
+{{$value.IP}}   {{ $value.Name }}.{{$domain}}
+{{$value.IP6Global}}    {{ $value.Name }}.{{$domain}}
+
+{{end}}