vela kaniko - support --use-new-run param

[jmccann]

Description

Add --use-new-run param to vela kaniko plugin. This is in an effort to speed up builds.

Currently multi-stage builds in kaniko take far longer then in docker buildkit. e.g.

• Parallel build of multi-stage Docker images GoogleContainerTools/kaniko#1548
• Kaniko build's performance much slower comparing with DID solution GoogleContainerTools/kaniko#875

There are reports that this newer experimental flag can help reduce build times.

Value

Hopefully faster builds using kaniko.

Definition of Done

Ability to use --use-new-run with vela kaniko plugin.

Effort (Optional)

1 hour

Impacted Personas (Optional)

• Who will benefit from completing this story? - users