[monitoring] fix test to allow no data returned by big query (#9389)
[monitoring] fix test to allow no data returned by big query (#9389)


danking/hail,danking/hail,cseed/hail,cseed/hail,hail-is/hail,hail-is/hail,danking/hail,hail-is/hail,cseed/hail,hail-is/hail,cseed/hail,danking/hail,hail-is/hail,danking/hail,cseed/hail,hail-is/hail,cseed/hail,cseed/hail,danking/hail,danking/hail,hail-is/hail,cseed/hail,hail-is/hail,danking/hail