MDL-60978 applied, redis session tests are back to pass, so we can revert the changes performed to both:
- moodle-ci-runner: https://github.com/moodlehq/moodle-ci-runner/commit/f36e8081c50dfa7342b9e91736c1febeeedebbd6
- moodle-docker: https://github.com/moodlehq/moodle-docker/pull/100
In order to get them back to run with PHP >= 7.2
Note that the 3rd place where we had made conditional redis session runs is travis, see
MDL-64530 ... but that's already reverted by MDL-60978 itself, so no action there is needed.
- is blocked by
MDL-60978 Fix Redis session tests