Provide readable output for binary columns when expected result does not match.

[brian-rickman]

3rd column in this instance:

2016-11-21 20:13:42 SEVERE: Failure cause:
java.lang.AssertionError: Could not find rows:

[abc, 123, [B@6880c591, false, 456.789, 1234.5678, 90123.453125, [1,2,3], 127.0.0.1, 1, [4,5,6], {"a":1,"b":2}, [4,5,6], this is a text value, 2011-02-03 04:05:00.0, d2177dd0-eaa2-11de-a572-001b779c76e3, 01234567-0123-0123-0123-0123456789ab, abc, 567]

actual rows:
[def, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null]
[abc, 123, [B@880cd78, false, 456.789, 1234.5678, 90123.453125, [1,2,3], 127.0.0.1, 1, [4,5,6], {"a":1,"b":2}, [4,5,6], this is a text value, 2011-02-03 04:05:00.0, d2177dd0-eaa2-11de-a572-001b779c76e3, 01234567-0123-0123-0123-0123456789ab, abc, 567]