Feature Request: Add standalone kustomize

[kenankule]

Describe the Feature Request
We're using kustomize edit commands in our CI/CD pipelines that is not available via kubectl kustomize
Please add kustomize binary to the image to enable kustomize edit commands.

Is your feature request related to a particular problem?
A clear and concise description of what the problem is.

How will this feature request benefit CircleCI jobs using this image?
Having kustomize binary available in the image allows running kustomize edit commands with environment variables.
- kustomize edit set image ...
- kustomize edit add annotation ....

Describe alternatives you have considered
An alternative is to use kubectl kustomize | envsubst but its not as convenient as kustomize edit