Date format bug in 1.8 that got fixed in 1.9

[Mike Thomsen]

FYI, ran into this bug. It's fixed in 1.9.0-SNAPSHOT

1. Declare an avro timestamp-millis field.
2. Try to convert to string with format(/fieldName, "yyyy-MM-dd")

Get an exception saying DataTypeUtils cannot convert java.sql.Timestamp to
java.sql.Date

This is the line that fixed it, FWIW, in 1.9.0-SNAPSHOT (sharing so others
can give it a quick review):

if (value instanceof java.util.Date) {
    java.util.Date _temp = (java.util.Date)value;
    return new Date(_temp.getTime());
}