Add task related metrics to swh-scheduler
Add some task related metrics to the swh-scheduler base task class (or whatever replaces it):
- task counts (start, success, failure)
- task durations (histogram)
Migrated from T1460 (view on Phabricator)
Add some task related metrics to the swh-scheduler base task class (or whatever replaces it):
Migrated from T1460 (view on Phabricator)