Kylo file sampling upload should forward parse exception messages to user.

Description

The specific error is related to specifying the file included a header when it did. This JIRA ISSUE relates to the fact that the UI doesn't present the parse exception to the user, forcing the user to go to the log files to find something easily correctable from the UI.
```2017-04-03 21:31:53 ERROR http-nio-8420-exec-6:BaseExceptionMapper:46 - toResponse() caught Exception: java.lang.IllegalArgumentException, The header contains a duplicate name: "0" in [Aaban, , 0, 0, 1, 864]
java.lang.IllegalArgumentException: The header contains a duplicate name: "0" in [Aaban, , 0, 0, 1, 864]```

Environment

None

Status

Assignee

Jagrut Sharma

Reporter

Douglas Moore

Labels

Reviewer

None

Story point estimate

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Epic Link

Components

Sprint

None

Fix versions

Affects versions

0.7.1

Priority

High
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