Summary:
Make our images public to allow external users to build artifacts. All of the code is
publically released so no reason to keep the images private.

Test Plan: build without creds

Reviewers: oazizi, michelle, vihang, jamesbartlett, #third_party_approvers

Reviewed By: oazizi, vihang, #third_party_approvers

JIRA Issues: PP-2628

Differential Revision: https://phab.corp.pixielabs.ai/D8314

GitOrigin-RevId: 8f122e017eabc557c7526526a71d6680cb6e2664