Is your feature request related to a problem? Please describe.
No shell launcher option in Shell mapper is available now (https://oozie.apache.org/docs/5.1.0/DG_ShellActionExtension.html)
Currently there is no way to specify Shell launcher action via DataprocPigOperator.

Describe the solution you'd like
We should extend the operator to add this capability.

Additional context
Currently there is no way to specify Shell launcher action via DataprocPigOperator.