add sync_attributes for subscriber, enforce one vOLT per subscriber, auto-create subscriber object for vOLT
add sync_attributes for subscriber, enforce one vOLT per subscriber, auto-create subscriber object for vOLT

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