tp: make run_metric more resilient to whitespace
tp: make run_metric more resilient to whitespace

Fixes: #178
Change-Id: I34193e0a238df21dbb0f4e5979ecbd7e0c21fe2d
google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto