Hephy Registry-Proxy v1.5.1

v1.5.0 -> v1.5.1

Features

• 951c8ba nginx: upgrade nginx to 1.18

Documentation

• fb9bd29 README: update the annoucement in repo

Maintenance

• ed8e945 registry-proxy: permit umbrella override api group
• bca00d4 charts: define APIVersion template
• 4e597fc charts: switch to hephy docker hub org
• 303cea3 charts: remove quay.io from ds