This task is to prepare a new release folder under cpaas-products/sandboxed-containers repository. We just copy the previous release folder into the release-next (ie. release-1.6.0) and replace any older reference inside the files to use the proper release versioning.

You can follow the same approach that we followed for 1.5.0.

Notes:

• advisory_map file should be auto generated, so you can leave the advisories empty as you can see in the 1.5.0 example above.
• In the product.yaml, update the version with the new version number (except any location that's listing multiple versions e.g. content-stream-tags)

*NOTE:* This issue came from a template. If you find any problems with it, please contact the admins so we can update the template accordingly for the next release.