tp: fix python test runner not returning errors on failure am: 0fdfdcf61c am: a58b0d4fcd am: d599cdd891
tp: fix python test runner not returning errors on failure am: 0fdfdcf61c am: a58b0d4fcd am: d599cdd891

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1410148

Change-Id: Ic19dce91f22f4a72b8dbd8a5e4b0d5578c1945b9

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto