soc-ops/global/overlay/etc/puppet/modules/soc/templates/sso/apache-groups.txt.erb

<%- scope.call_function('safe_hiera',['sso_groups']).each do | group, users | -%>
<%= group %>: <% users.each.with_index do | user, i | %><%= user %><%= ' ' if i < (users.size - 1) %><% end %>
<%- end -%>