ERRORS: Add ERR_GID_DUPLICATED
This new error will be returned from sysdb_add_incomplete_group()
when renaming a group which will case gid collision.
Related:
https://pagure.io/SSSD/sssd/issue/2653
Signed-off-by: Fabiano FidĂȘncio <fidencio@redhat.com>
Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>