systemd: Rename 99-virtio.network to 99-default.network.

This CL is renaming 99-virtio.network to 99-default.network. It also
include `gve` driver in the `[Match]` field so that IPV6 related
configurations are applicable to both virtio_net and gve.

BUG=b/74356284
TEST=presubmit
RELEASE_NOTE=Renamed 99-virtio.network to 99-default.network to include
gve driver support.

Change-Id: I3eb3284f8ec0d72d833b4bd8ea4c9b7a9a3489da
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/19490
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
2 files changed