KUDU-1770 [i-tests] test for timestamp propagation with write ops
KUDU-1770 [i-tests] test for timestamp propagation with write ops

Added an integration test to verify that C++ client propagates
timestamp with write operations.

The test is disabled as it currently fails. A follow up patch will fix
the bug and enable the test.

This is in the context of the following JIRA item:
KUDU-1770 C++ client: propagate timestamp for write operations

Change-Id: I1be285fd860f0608f5d4ce3be57c4e4b04c63455
Reviewed-on: http://gerrit.cloudera.org:8080/5268
Reviewed-by: David Ribeiro Alves <78b9f953b197533e9b51c860b080869056433b48@apache.org>
Tested-by: Kudu Jenkins

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