Set nova nightly image hash in CI

3 jobs for master in 1 minute and 8 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #5205
amd64
build amd64

00:00:27

passed #5206
arm64
build arm64

00:00:50

 
  Manifest
passed #5207
manifest

00:00:18