[util] introduce EXPECT_STR_MATCHES() macro

This patch introduces EXPECT_STR_MATCHES macro and starts using it
in the TestNegotiation.  The idea is to match the EXPECT-like behavior
used in verifying the actual test results against the reference ones.

Change-Id: Ibf036bff8ab0aace20d11281d2837cfa6af32db6
Reviewed-on: http://gerrit.cloudera.org:8080/19900
Tested-by: Kudu Jenkins
Reviewed-by: Abhishek Chennaka <achennaka@cloudera.com>
2 files changed