[kudu-CR] [txn manager] allow service user to call txn-related RPCs

["Alexey Serbin (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins, 

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

    http://gerrit.cloudera.org:8080/17510

to look at the new patch set (#2).

Change subject: [txn_manager] allow service user to call txn-related RPCs
......................................................................

[txn_manager] allow service user to call txn-related RPCs

Since we are planning to use transactional operations in kudu CLI tools
(e.g., in 'kudu perf loadgen'), it makes sense to allow txn-related RPCs
to be invoked by a super user since kudu CLI tools are often run under
such credentials.  This patch changes the RPC-level coarse authz
settings for all methods in the TxnManagerService accordingly.

"AuthorizeClient" to "AuthorizeClientOrServiceUser".

Change-Id: I21e4b29634fd01f0ced80b54373b1ce156e274ad
---
M src/kudu/integration-tests/security-itest.cc
M src/kudu/master/txn_manager_service.cc
2 files changed, 106 insertions(+), 17 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/10/17510/2
-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I21e4b29634fd01f0ced80b54373b1ce156e274ad
Gerrit-Change-Number: 17510
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins (120)