sdk: Implement force_flush for span processors#389

Merged

toumorokoshi merged 3 commits intoopen-telemetry:masterfrom kinvolk:mauricio/implement-force-flush

Feb 4, 2020

+42-6

Commits on Jan 29, 2020

sdk: Implement force_flush for span processors
mauriciovasquezbernal
committed

Commits on Feb 3, 2020

Improve testing:
mauriciovasquezbernal
committed

Commits on Feb 4, 2020

Separate tests for shutdown and force_flush
mauriciovasquezbernal
committed