Cleanup tests and switch to VPRetinaClusters

• Run tests in their own directory (see LHCb!3975 (merged))
• Switch reconstruction to use VPRetinaClusters

/ci-test

added RTA label

added ci-test-triggered label

• [2023-02-23 12:00] Validation started with lhcb-master-mr#7117
• [2023-02-23 15:28] Automatic merge failed in [lhcb-master-mr#7121](https://lhcb-nightlies.web.cern.ch/nightly/lhcb-master-mr/7121/Alignment/checkout
• [2023-02-23 17:18] Validation started with lhcb-master-mr#7124

added 4 commits

• e3898864...f1b8afcf - 2 commits from branch master
• 8f5f0d5c - Run tests in their own directories
• bdc215ac - Switch to Retina clusters

Compare with previous version

/ci-test

added 2 commits

• 7a5cdad8 - Run tests in their own directories
• f71a8dad - Switch to Retina clusters

Compare with previous version

resolved all threads

/ci-test

mentioned in merge request !331 (merged)

added 2 commits

• 4baefac6 - Run tests in their own directories
• e50a2ff0 - Switch to Retina clusters

Compare with previous version

resolved all threads

mentioned in commit 0f77253f

merged