[SPARK-16548][SQL] Inconsistent error handling in JSON parsing SQL functions

## What changes were proposed in this pull request?

change to using Jackson's `com.fasterxml.jackson.core.JsonFactory`

    public JsonParser createParser(String content)

## How was this patch tested?

existing unit tests

Please review http://spark.apache.org/contributing.html before opening a pull request.

Author: Eric Wasserman <ericw@sgn.com>

Closes #17693 from ewasserman/SPARK-20314.