dnsmasq:
  zones:
    domain_com:
      hosts:
        1.1.1.1: host1
        1.1.1.2: host2
        1.1.1.3: host3
        1.1.1.21: host21

{% for zone in pillar['dnsmasq']['zones'] %}

/tmp/{{ zone }}:
  file.managed:
    - contents:
{% for ip, host in pillar['dnsmasq']['zones'][zone]['hosts']|dictsort  %}
           {{ ip }} {{ host }}
{% endfor %}
{% endfor %}

# cat /tmp/domain_com
1.1.1.1 host1
1.1.1.2 host2
1.1.1.21 host21
1.1.1.3 host3

# cat /tmp/domain_com
1.1.1.1 host1
1.1.1.2 host2
1.1.1.3 host3
1.1.1.21 host21