lakitu: Add net-misc/chrony-config package

net-misc/chrony-config package is used to deal with chrony.conf,
separate configuration from net-misc/chrony, and place different
configuration file per the platform USE flag. Make it more easy
to maintain compared to existing mechanism placing platform specific
configuration in chrome-base, which spread accross a couple of repo.

BUG=b/175133264
TEST=presubmit and manually test
RELEASE_NOTE=None

Change-Id: Iec0b0902ff772baa702768a1a6dfa33cd1d01dc0
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/9460
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
9 files changed