Add Wireguard-based K8s pod networking

This adds a pod networking runnable based on Wireguard which watches all nodes
and adds their K8s IPAM allocations as routes into the kernel & WireGuard. It only depends
on K8s and only performs direct routing.

Test Plan: Manually tested by spinning up a two-node cluster and running two Alpine pods pinging eachother. Can be covered by E2E tests once we can do image preseeding for the test infra (T793).

Bug: T487

X-Origin-Diff: phab/D573
GitOrigin-RevId: ba3fc36f421fd75002f6cf8bea25ed6f1eb457b0
diff --git a/core/internal/containerd/BUILD.bazel b/core/internal/containerd/BUILD.bazel
index 56c2822..a1deae0 100644
--- a/core/internal/containerd/BUILD.bazel
+++ b/core/internal/containerd/BUILD.bazel
@@ -15,6 +15,5 @@
 exports_files([
     "config.toml",
     "runsc.toml",
-    "loopback.json",
-    "ptp.json",
+    "cnispec.gojson",
 ])