Update samba configuration on IPA master to explicitly use 'server role' setting
The default for this setting is 'auto', which may affect
IPA Samba configuration on future Samba versions. By explicitly
setting this parameter in the template, future manual
intervention is prevented.
Fixes: https://pagure.io/freeipa/issue/8452
Signed-off-by: Antonio Torres <antorres@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>