[DO NOT MERGE] Fix and re-enable MultiSpoutsMultiTasks test

[objmagic]

DO NOT MERGE

Recently our Travis CI repeatedly fails on integration test MultiSpoutsMultiTasks.

Can't reproduce Travis CI integration test error locally, so open a PR here to really test Travis CI.

[maosongfu]

Let's also log when an instance receives the tuples from stmgr, which is here:
https://github.com/twitter/heron/blob/master/heron/instance/src/java/com/twitter/heron/network/StreamManagerClient.java#L291

[objmagic]

finally got some useful logs. See attachment.
ci_logs.tar.gz

[objmagic]

Each spout sends out ten tuples exactly.

1691-investigation $ grep "taskid" container_1_ab-spout-1_2.log | wc -l
      10
1691-investigation $ grep "taskid" container_1_ab-spout-1_3.log | wc -l
      10
1691-investigation $ grep "taskid" container_1_ab-spout-2_4.log | wc -l
      10
1691-investigation $ grep "taskid" container_1_ab-spout-2_5.log | wc -l
      10
1691-investigation $ grep "taskid" container_1_ab-spout-2_6.log | wc -l
      10
1691-investigation $ grep "taskid" container_1_ab-spout-1_1.log | wc -l
      10

[objmagic]

grep "taskid" container_1_identity-bolt_8.log | wc -l gives us 64.
grep "taskid" container_1_identity-bolt_8.log | grep 5 | wc -l gives us 14.

container_1_ab-spout-2_5 has some problem?

[objmagic]

ci.log:[2017-02-03 23:03:01 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_79af2046-68eb-401e-99c3-f850dd546d69
ci.log:[2017-02-03 23:03:01 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_9ccb1355-95c0-42bf-a8d8-bffe5a8b60b7
ci.log:[2017-02-03 23:03:31 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_79af2046-68eb-401e-99c3-f850dd546d69
ci.log:[2017-02-03 23:03:31 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_9ccb1355-95c0-42bf-a8d8-bffe5a8b60b7
container_1_ab-spout-2_5.log:[2017-02-03 23:03:01 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_79af2046-68eb-401e-99c3-f850dd546d69
container_1_ab-spout-2_5.log:[2017-02-03 23:03:01 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_9ccb1355-95c0-42bf-a8d8-bffe5a8b60b7
container_1_ab-spout-2_5.log:[2017-02-03 23:03:31 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_79af2046-68eb-401e-99c3-f850dd546d69
container_1_ab-spout-2_5.log:[2017-02-03 23:03:31 +0000] com.twitter.heron.integration_test.core.IntegrationTestSpout INFO:  Received a fail with MessageId: __integration_test_mock_message_id_9ccb1355-95c0-42bf-a8d8-bffe5a8b60b7

container_1_ab-spout-2_5 receives 4 fails and re-emits 4 tuples