NIFI-14443: Add FlowFile Expression Language support for Hostname and Share properties in PutSMBFile

[mark-bathori]

The proposed solution uses a FlowFile filter designed to avoid possible performance degradation by grouping FlowFiles that share the same hostname and share values. This grouping is combined with the already existing batch size property. While these changes may alter the order of FlowFiles when the processor is used with different hostname and share values, I believe this change will not significantly impact the SMB processor, given that the original behavior is retained.

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NIFI-14443

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[turcsanyip]

@mark-bathori Thanks for the improvement. At first glance, it looks good overall. Will test it later.
I think some unit tests would be useful for the new FlowFileFilter and a TestRunner test could also be added in PutSmbFileTest for this new use case.
Thanks