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>
diff --git a/project-lakitu/sys-apps/systemd/files/99-virtio.network b/project-lakitu/sys-apps/systemd/files/99-default.network
similarity index 91%
rename from project-lakitu/sys-apps/systemd/files/99-virtio.network
rename to project-lakitu/sys-apps/systemd/files/99-default.network
index e974508..651400b 100644
--- a/project-lakitu/sys-apps/systemd/files/99-virtio.network
+++ b/project-lakitu/sys-apps/systemd/files/99-default.network
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 [Match]
-Driver=virtio_net
+Driver=virtio_net gve
 
 [Network]
 DHCP=yes
diff --git a/project-lakitu/sys-apps/systemd/systemd-239-r24.ebuild b/project-lakitu/sys-apps/systemd/systemd-239-r25.ebuild
similarity index 100%
rename from project-lakitu/sys-apps/systemd/systemd-239-r24.ebuild
rename to project-lakitu/sys-apps/systemd/systemd-239-r25.ebuild