v1.3.0-rc4

What's Changed

• Fix grafana 404 in some scenarios by @w13915984028 in #665
• Arm build support by @ibrokethecloud in #656
• suffix os arch to harvester-images-list.txt and image-lists.tar.gz by @ibrokethecloud in #667

Full Changelog: v1.3.0-rc3...v1.3.0-rc4