Mike Percy has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/8732 )

Change subject: KUDU-2229. consensus: Leader should not start FD
......................................................................

KUDU-2229. consensus: Leader should not start FD

This patch fixes a log spam issue caused by commit
28a671365d6d38da966481daf937b3776e3d4852 that erroneously enables the
failure detector on the leader when a configuration takes place. That
bug had no consensus safety implications, but it did generate a large
volume of confusing log messages in a neverending loop.

This patch also includes some minor updates to InternalMiniCluster for
convenience purposes.

Change-Id: Ie2ec9c5499e8e4c1659333bd53dd2d7f6dae81f5
Reviewed-on: http://gerrit.cloudera.org:8080/8711
Reviewed-by: Alexey Serbin <[email protected]>
Tested-by: Kudu Jenkins
Reviewed-on: http://gerrit.cloudera.org:8080/8732
---
M src/kudu/consensus/raft_consensus.cc
M src/kudu/consensus/raft_consensus.h
M src/kudu/integration-tests/CMakeLists.txt
A src/kudu/integration-tests/raft_consensus_failure_detector-imc-itest.cc
M src/kudu/mini-cluster/external_mini_cluster.h
M src/kudu/mini-cluster/internal_mini_cluster.cc
M src/kudu/mini-cluster/internal_mini_cluster.h
M src/kudu/mini-cluster/mini_cluster.h
M src/kudu/rpc/periodic.cc
M src/kudu/rpc/periodic.h
10 files changed, 206 insertions(+), 22 deletions(-)

Approvals:
  Alexey Serbin: Looks good to me, approved
  Kudu Jenkins: Verified

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Gerrit-Project: kudu
Gerrit-Branch: branch-1.6.x
Gerrit-MessageType: merged
Gerrit-Change-Id: Ie2ec9c5499e8e4c1659333bd53dd2d7f6dae81f5
Gerrit-Change-Number: 8732
Gerrit-PatchSet: 2
Gerrit-Owner: Mike Percy <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <[email protected]>

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