[kudu-CR] Show software version of tablet servers

["Andrew Wong (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/3535

to look at the new patch set (#3).

Change subject: Show software version of tablet servers
......................................................................

Show software version of tablet servers

Addressing KUDU-1490: displaying tserver versions in master
web UI.

In the web UI, it could be helpful to know what version of the
software a tablet server is running. This commit addresses this
by adding a field to the initial registration heartbeat of a
tablet. The version is displayed in the Registration column of
the Tablet Servers page of the master web server.

See:
https://raw.githubusercontent.com/anjuwong/kudu/tserver-vers/tserver_vers_on_master_ui.png

Change-Id: I84b32608c9e12a47f422b5047591d4098d187478
---
M src/kudu/master/master.proto
M src/kudu/tserver/heartbeater.cc
2 files changed, 4 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/35/3535/3
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I84b32608c9e12a47f422b5047591d4098d187478
Gerrit-PatchSet: 3
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Andrew Wong <an...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>