Make Slice.ServiceClass no longer required
Make Slice.ServiceClass no longer required

zdw/xos,cboling/xos,open-cloud/xos,zdw/xos,opencord/xos,zdw/xos,cboling/xos,cboling/xos,opencord/xos,cboling/xos,opencord/xos,cboling/xos,open-cloud/xos,open-cloud/xos,zdw/xos