testrunner: made -x work with individual tests (#8362)
#20431
| Job | Run time |
|---|---|
| 5m 37s | |
| 1m 19s | |
| 6m 56s |
-x work with individual tests (#8362)
#20431
| Job | Run time |
|---|---|
| 5m 37s | |
| 1m 19s | |
| 6m 56s |