Deduplicate collect_*_reports! methods

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Summary

The current implementation of collect_*_reports! methods have a lot of duplicated code. We should look into extracting the generic parts to improve this.

Every collect method does something a bit differently:

• collect_test_reports! does test_reports.get_suite(group_name) before populating the report
• collect_security_reports! has different feature checks and reports depending on the security report type
• collect_license_management_reports! and collect_metrics_reports! are more or less the same and can be deduplicated when we remove the feature flag check collect_license_management_reports! (we already have a license feature check which should count as a feature flag as well, so I think we can remove it soon)