[TASK] Tests: Include all NOT NULL fields in EXT:workspaces fixtures

[TASK] Tests: Include all NOT NULL fields in EXT:workspaces fixtures

The fixtures used by the functional tests are incomplete and don't
contain all fields that are defined as NOT NULL in the database schema.
Add the missing information to the fixtures to make tests pass when
running in MySQL strict mode.

Resolves: #69059
Releases: master
Change-Id: I466cf8fd965918096cc72710a8637e82d26d48c9
Reviewed-on: http://review.typo3.org/42628
Reviewed-by: Frans Saris <franssaris@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>