add attribut ['ntp']['restrict_default'] to provide the default restrict fonctionnaliy
ntp.conf need fqdn for server line and ip address for restrict line. So we retrieve ntp server name from node attribut (minus ntp peer name) and we generate to records[:ip,:fqdn] for ipv4 and ipv6 address. These records will be use to generate server and restrict line
ntp.conf need fqdn for server line and ip address for restrict line. So we retrieve ntp server name from node attribut (minus ntp peer name) and we generate to records[:ip,:fqdn] for ipv4 and ipv6 address. These records will be use to generate server and restrict line