[Feature]Returning RuntimeException to REST client while job submission

[Lavkesh Lahngir]

Hello,
The change in FLINK-10312
<https://issues.apache.org/jira/browse/FLINK-10312> makes REST response of
the API
<https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/rest_api.html#jars-jarid-run>
not
very informative. It strips the stack trace and returns a generic message.
People using flink-cluster deployment who do not have access to job manager
logs, will not be able to figure out the root cause.
In the case of when the job submission fails,
In 1.6.2, I get
{
    "errors": [
        "org.apache.flink.client.program.ProgramInvocationException: The
main method caused an error."
    ]
}

Is there a plan to improve error messages sent to the client?
Is somebody working on this already?

Thanks in advance.
~Lavkesh