[TASK] Set Fluid cache backend to SimpleFileBackend

A significant performance increase can be achieved
by switching to this backend because FileBackend
will do excessive calls to file_get_contents.

Affects every currently supported TYPO3 version.

Change-Id: I231c5b2ff7be3eecc8a4138cbd05af494d228297
Resolves: #81006
Releases: master, 8.7
Reviewed-on: https://review.typo3.org/52597


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>