avro

AVRO-2241. Fix Jsr310/Joda datetime tests (#346)

Whe comparing Instant, DateTime, LocalTime with its Joda equivalents
the tests fail since the java.time.* adds support for microseconds,
and Joda only miliseconds. For example:

Failed tests:
  TestSpecificLogicalTypes.testAbilityToReadJodaRecordWrittenAsJsr310Record:183
Expected: is "11:45:07.170331"
     but: was "11:45:07.170"
  TestSpecificLogicalTypes.testRecordWithJsr310LogicalTypes:115 Should match written record expected:

<{"b": true, "i32": 34, "i64": 35, "f32": 3.14, "f64": 3019.34, "s": null, "d": 2018-10-11, "t": 11:45:06.513252, "ts": 2018-10-11T11:45:06.513358Z, "dec": 123.45}>

but was:

<{"b": true, "i32": 34, "i64": 35, "f32": 3.14, "f64": 3019.34, "s": null, "d": 2018-10-11, "t": 11:45:06.513, "ts": 2018-10-11T11:45:06.513Z, "dec": 123.45}>