Pass the StepExecution to the Partitioner API

[djechelon]

In order to take an if-else decision based on job arguments (specifically, my job can be executed against a "reference date" so I can pass it from command like), I would like to use that information in the Partitioner to select files/item/rows according to that information.

Currently, only information available is the grid size. According to SimpleStepExecutionSplitter, the StepExecution is available before calling the Partitioner.

I would kindly ask if it is possible, for the next version, to add the parameter to the Partitioner interface

Thanks for your attention

[injae-kim]

Fix PR: #4716