[kudu-CR] [metrics] KUDU-3269: Add UUID and hostname of the server into the metrics output

["Abhishek Chennaka (Code Review)" <ge...@cloudera.org>]

Hello Tidy Bot, Alexey Serbin, Kudu Jenkins, Grant Henke, Bankim Bhavsar, 

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

    http://gerrit.cloudera.org:8080/17607

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

Change subject: [metrics] KUDU-3269: Add UUID and hostname of the server into the metrics output
......................................................................

[metrics] KUDU-3269: Add UUID and hostname of the server into the metrics output

This patch adds the UUID and the server hostname into the metrics
webpage of master and tablet server. These are added in the attributes
section of the metrics webpage. For example:

        "type": "server",
        "id": "kudu.master",
        "attributes": {
            "hostname": "MacBook-Pro.local",
            "uuid": "4b8015e347dd4efd92bb0d38e03434e6"
        },

Change-Id: I7d6d1e96f8067a7b1593da4f9d0e1931d3001016
---
M src/kudu/master/master-test.cc
M src/kudu/server/server_base.cc
M src/kudu/tserver/tablet_server-test.cc
3 files changed, 34 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/07/17607/3
-- 
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I7d6d1e96f8067a7b1593da4f9d0e1931d3001016
Gerrit-Change-Number: 17607
Gerrit-PatchSet: 3
Gerrit-Owner: Abhishek Chennaka <ac...@cloudera.com>
Gerrit-Reviewer: Abhishek Chennaka <ac...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: Bankim Bhavsar <ba...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)