CORD-866 fix error when printing traceback in orm_listall test
CORD-866 fix error when printing traceback in orm_listall test

Change-Id: I0959c95126f05074f938c3e7f2efdfd49cc9e47e

open-cloud/xos,opencord/xos,open-cloud/xos,opencord/xos,opencord/xos,open-cloud/xos