##################   jinja file  ##############
{% if 'environment' in pillar and 'office' in pillar['environment'] %}
{% set jinjamap = salt['grains.filter_by']({
    'Debian': {
        'k': 'v',
    },
    'CentOS': {
        'k': 'v',
        'nameservers': {
              '0': '192.168.0.218',
              '1': '192.168.0.121',

            },
        'nameservers2':
               - '192.168.0.218'
               - '192.168.0.121'
            ,

    },
}, grain='os', merge=salt['pillar.get']('test:lookup')) %}
{% endif %} {#end environment #}








########################    CONF file (generated from jinja)
{%- for   value in jinjamap.nameservers2 %}
nameserver  {{ value -}}
{% endfor %}