Make sure we are setting DEBIAN_FRONTEND=noninteractive in support/bootstrap when installing packages in Ubuntu

What does this Merge Request do and why?

Make sure we are setting DEBIAN_FRONTEND=noninteractive before trying to install packages in Ubuntu.

For some reasons setting the ENV in Dockerfile was not working for containerd.

Test and validation

Please follow the reproduction instructions #1510 (comment 994065189) and try the before/after.

This is backward compatible.

Merge Request checklist

• This change is backward compatible. If not, please include steps to communicate to our users.
• Tests added for new functionality. If not, please raise Issue to follow-up.
• Documentation added/updated, if needed.
• gdk doctor test added, if needed.
• Add the ~highlight label if this MR should be included in the CHANGELOG.md.

Closes #1510 (closed)