Ability to run all image builds in the same namespace

[tmyhu]

It would be great to have an option to run all image builds in one namespace, instead of wherever the BentoRequest is created. Maybe even the yatai-image-builder namespace by default.

When using ECR, you need a service account with corresponding IAM role in the namespace where the build runs which makes it not feasible to deploy bentos across many namespaces that are not all known or exist during initial setup.

[yetone]

Sorry, it is not supported at the moment because the Bento CRD is namespace scoped instead of cluster scoped. Therefore, when creating and using it, a specific namespace is required.