Using Grains cache in pillars

p.yaml

{%- set grns = salt.saltutil.runner('cache.grains', tgt='serv*') %}
{%- for id, grn in grns.items()|sort %}
{%-   set role = id[3:6] %}
address: {{ grn.ip4_interfaces.eth0[0] | default("127.0.0.1") }}
{%- endfor %}