[2.0] Passed Azure config to toolkit build env.

[PawelWMS]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./SPECS/LICENSES-AND-NOTICES/data/licenses.json, ./SPECS/LICENSES-AND-NOTICES/LICENSES-MAP.md, ./SPECS/LICENSES-AND-NOTICES/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

---

Summary

We're adding support for anonymous Azure blob stores in #14494. This change is to help with that work by making the Azure configuration (including login info) exposed during build-time. Since the toolkit requires to be run as root, the user's Azure config is not visible by default, because it's saved under $HOME/.azure and since we're running as root, the home directory is different from the running user's home directory.

This is a 2.0 backport of #14526. Updates to our build infrastructure will require this change for 2.0 builds as well.

Does this affect the toolchain?

No.

Associated issues

• toolkit: enable downloads using Azure CLI credentials #14494
• [3.0] Passed Azure config to toolkit build env. #14526

Test Methodology

• Local tests.
• Budd builds where the toolkit attempts to upload files to a test Azure Storage Account using the new authentication method:
  • Before the fix.
  • After the fix.