Use overlay2 storage driver on Docker build

What does this MR do?

Use overlay2 storage driver on fetch-assets job (with Docker build).

Checklist

See Definition of done.

• [n/a] Change added to CHANGELOG.md. Not applicable for Documentation changes and minor changes.
• [n/a] Documentation created/updated
• [n/a] Tests added
• [n/a] Integration tests added to GitLab QA, if applicable
• MR targeting master branch
• MR has a green pipeline on GitLab.com

Reviewer Checklist

In addition to above, reviewer must:

• Pipeline is green on dev.gitlab.org if the change is not touching documentation or internal cookbooks

References

Closes #4212 (closed)