ngr: Fix Gradle test runner by only _conditionally_ invoking gradle wrapper
#30
| Job | Run time |
|---|---|
| 2m 54s | |
| 3m 20s | |
| 6m 14s |
gradle wrapper
#30
| Job | Run time |
|---|---|
| 2m 54s | |
| 3m 20s | |
| 6m 14s |