Add possibility to configure line separator for RecursiveCollectionLineAggregator

[rsandtner]

Expected Behavior

The possibility to set the line separator for the RecursiveCollectionLineAggregator exists.

Current Behavior

The line separator is hardcoded using System.getProperty("line.separator")

Context

Batch integration tests are executed on different dev machines using different OS with different line endings (Windows, Mac, Linux).
We use golden files to check the file content and, therefore, are dependent on line endings.

Workaround:

• set the system property for the specific tests
• use strings instead of golden files

[fmbenhassine]

Thank you for raising this. In fact, the line separator should be configurable in RecursiveCollectionLineAggregator. I will plan that for v5.2.

[rsandtner]

thx @fmbenhassine