Fix CI test failures#4007

Merged

raulchen merged 4 commits intoray-project:masterfrom

antgroup:fixPyTestFailures

Feb 11, 2019

Commits on Feb 10, 2019

Enlarge waiting time in test_actors_and_tasks_with_gpus
Yuhong Guo
committed
Add log to object_manager_test.cc
Yuhong Guo
committed
Increase time
Yuhong Guo
committed
use _random_string to replace random_string, increase object size in object_manager_test.cc
Yuhong Guo
committed