Allow arrays of groups for node['sys']['pam']['group']
sys: {
pam: {
group: [
{ usr: 'john', grp: %[group1 group2] }
]
},
}
renders to
*;*;john;Al0000-2400;["group1", "group2"]
instead of
*;*;john;Al0000-2400;group1,group2