fix bug when running onos tosca twice
fix bug when running onos tosca twice

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