fix bug in default attribute lookup
fix bug in default attribute lookup

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