infra/deploy.sh: drop scripts/common.sh source, inline its consumers

[davidsmejia]

Issue Number

#3572

Purpose/Implementation Notes

• infrastructure/deploy.sh only used two things from scripts/common.sh:
  • the $ALL_IMAGES list (consumed by the for-loop that builds per-image TF_VAR_*_docker_image vars) and get_deploy_repo (a two-line case mapping branch → Dockerhub namespace). Both are inlined now so this file no longer depends on scripts/.
• ALL_IMAGES is now a local string literal, matching the expansion of common.sh's base api_base api foreman $WORKER_IMAGES.
• get_deploy_repo is replaced with the two literal repo names (ccdlstaging / ccdl) at the only call site, with a comment naming what each is for.

Methods

N/A

Types of changes

• Bugfix (non-breaking change which fixes an issue)

Functional tests

N/A

Checklist

• Lint and unit tests pass locally with my changes

Screenshots

N/A