Adding `bind-tools` to EdgeOS

BUG=b/230593189
TEST=Manually verified that the binaries from the package are present in the final image
RELEASE_NOTE=Added the `bind-tools` package to EdgeOS

Change-Id: I9f2775a46cf03c87733f90d0219cb403e038efb8
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/32620
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
4 files changed