Add sleep to try to fix test..

Author: DylanRussell

opentelemetry-sdk/tests/shared_internal/test_batch_processor.py

@@ -141,7 +141,7 @@ def bulk_emit_and_flush(num_emit):
         with ThreadPoolExecutor(max_workers=69) as executor:
             for idx in range(69):
                 executor.submit(bulk_emit_and_flush, idx + 1)
-            time.sleep(0.5)
+            time.sleep(2)
 
             executor.shutdown()