Update spark submit operator for spark 3 support

[stijndehaes]

In spark 3 they log the exit code with a lowercase
e, in spark 2 they used an uppercase E.

Also made the exception a bit clearer when running
on kubernetes.

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[dawany]

compatible with spark2 and 3

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stijndehaes]

This issue is still very relevant more so with the official release of spark 3.0

[kaxil]

Thanks for the fix @stijndehaes

[teddyhartanto]

Thank you! @stijndehaes @kaxil