project-lakitu: cloud-init: move cloud.cfg to cloud-init-config

add azure specific cloud.cfg

BUG=b/175418043
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I5812d85160e3149b312304635c08e2fba4b2441f
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/10400
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
7 files changed