v2.15.0.21rc1

What's Changed

• 3scale tests v2.15.0.20rc1 by @github-actions in #882
• Use configured sources for metadata of tools by @mdujava in #883
• Open telemetry tests marks by @mdujava in #884
• Make more general selector for 3scale and apicast operators by @mdujava in #880

Full Changelog: v2.15.0.20...v2.15.0.21rc1