nethserver-samba-sam-conf action: added comment attribute to predefined group entries. Refs #1861
nethserver-samba-group-create action: use default RID allocation method. Refs #1829
group-{create,modify} events: call nethserver-samba-group-sync action. Refs #1861
nethserver-samba-migrate-sam action: load existing groups RIDs, to complete group migration. Refs #1829
migration-import event: restart winbind at the end of migration. This seems to be necessary to re-read the changed SIDs. Refs #1829
 nethserver-samba-migrate-ibays: enable "migration" profile on ibays. Refs #1855