[kudu-CR] Fix bug in incorrect response rebuilding on tablet bootstrap

["David Ribeiro Alves (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/5489

to look at the new patch set (#4).

Change subject: Fix bug in incorrect response rebuilding on tablet bootstrap
......................................................................

Fix bug in incorrect response rebuilding on tablet bootstrap

This fixes the bug described in: https://gerrit.cloudera.org/#/c/5417/
... and enables the test disabled in that patch.

Along the way this also performs some cleanup of tablet bootstrap.

I ran raft_consensus-itest's TestInsertDuplicateKeysWithCrashyNodes
on dist-test for 5000 loops with the following config:

KUDU_ALLOW_SLOW_TESTS=1 ../../build-support/dist_test.py \
--disable-sharding loop -n 5000 -- bin/raft_consensus-itest \
--gtest_filter=*DuplicateKeysWithCrashyNodes

Prior to this patch the test failed 62/5000:
http://dist-test.cloudera.org//job?job_id=david.alves.1493915326.763

After this patch the test passes 5000/5000:
http://dist-test.cloudera.org//job?job_id=david.alves.1493914745.27867

Change-Id: I1219ed5f7835e93cd7f3b128cedd650fc3384482
---
M src/kudu/tablet/row_op.cc
M src/kudu/tablet/row_op.h
M src/kudu/tablet/tablet_bootstrap.cc
M src/kudu/tserver/tablet_server-test.cc
4 files changed, 106 insertions(+), 105 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/89/5489/4
-- 
To view, visit http://gerrit.cloudera.org:8080/5489
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I1219ed5f7835e93cd7f3b128cedd650fc3384482
Gerrit-PatchSet: 4
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: David Ribeiro Alves <da...@gmail.com>
Gerrit-Reviewer: Jean-Daniel Cryans <jd...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mp...@apache.org>
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>