v0.4.2-rc4

What's Changed

• add kylin os case by @wenting-guo in #416
• fix offline e2e bug by @wenting-guo in #417
• update pr ci yaml by @wenting-guo in #422
• make pr ci from vagrant to vm by @wenting-guo in #423
• add a parameter to pr ci workflow by @wenting-guo in #435
• add calico case in nightly e2e by @wenting-guo in #438
• add secrets for nightly e2e in workflow yaml by @wenting-guo in #445
• Add resources by @ErikJiang in #447
• update case md by @wenting-guo in #448
• update nightly e2e yaml by @wenting-guo in #449
• update kubean logo by @ErikJiang in #450
• update os compatibility e2e to vm by @wenting-guo in #451
• update nightly e2e passwd to secret by @wenting-guo in #455
• add secrets parameter in os compatibility workflow yaml by @wenting-guo in #456
• Remove versions.json by @tu1h in #452
• optimize hardcode namespace by @hangscer8 in #457
• Support import for ubuntu iso by @tu1h in #458
• Add spray job timeout by @hangscer8 in #462

Full Changelog: v0.4.2-rc3...v0.4.2-rc4