[BUGFIX] Use chr(10) instead of LF in functional test data provider

The functional test splitter script does not define LF and various
other constants, but loads test data providers to find out how
many tests they produce. Those data provider should not use LF,
the splitter throws PHP warnings otherwise.

Resolves: #86552
Releases: master
Change-Id: I89c0748ce595f1f7caee2934f4431b103f60471b
Reviewed-on: https://review.typo3.org/58563


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>