#26989 MFTF: Use <magentoCron> for reindex

[lbajsarowicz]

Description (*)

Optimize Functional Tests performance by using <magentoCron groups="index"> where applicable.
Replace cache:flush with cache:flush config where applicable.,

Similar Pull Requests

• #26989 MFTF: Use <magentoCron> for reindex magento2#26990
• https://github.com/magento/partners-magento2b2b/pull/53

Fixed Issues (if relevant)

1. MFTF: Use Magento Cron for reindexing after creating data magento2#26989

Manual testing scenarios (*)

1. CI Functional Tests should pass in < 70 minutes

Questions or comments

Work In Progress as I need to stabilise the CI.

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds are green)