test(spanner): add location router finder golden tests and centralize textproto test utils - #6482

test(spanner): add location router finder golden tests and centralize textproto test utils#6482

olavloite wants to merge 2 commits into

googleapis:maingoogleapis/google-cloud-rust:mainfrom

olavloite:spanner-location-router-golden-testsolavloite/google-cloud-rust:spanner-location-router-golden-testsCopy head branch name to clipboard