[builder] Replace hard-coded project name
[builder] Replace hard-coded project name

Change-Id: I46d6991ad2284dd5ef51a7689cb5d4160814b38b
Reviewed-on: https://dart-review.googlesource.com/c/dart_ci/+/221643
Reviewed-by: Alexander Thomas <29642742b6693024c89de8232f2e2542cf7eedf7@google.com>
Commit-Queue: William Hesse <a821cddceae7dc400f272e3cb1a72f400f9fed6d@google.com>

dart-lang/dart_ci,dart-lang/dart_ci,dart-lang/dart_ci,dart-lang/dart_ci