Add Windows integration tests showing that subst is handled inconsistently
#6054
| Job | Run time |
|---|---|
| 1m 13s | |
| 1m 15s | |
| 2m 57s | |
| 5m 25s |
subst is handled inconsistently
#6054
| Job | Run time |
|---|---|
| 1m 13s | |
| 1m 15s | |
| 2m 57s | |
| 5m 25s |