nixos/kubernetes: fix infra image pinning (#470971)

nixos/modules/services/cluster/kubernetes/default.nix

@@ -20,7 +20,7 @@ let
     };
 
     plugins."io.containerd.grpc.v1.cri" = {
-      sandbox_image = "pause:latest";
+      sandbox_image = "docker.io/library/pause:latest";
 
       cni = {
         bin_dir = "/opt/cni/bin";

nixos/modules/services/cluster/kubernetes/kubelet.nix

@@ -371,7 +371,6 @@ in
                         --hostname-override=${cfg.hostname} \
                         --kubeconfig=${kubeconfig} \
                         ${optionalString (cfg.nodeIp != null) "--node-ip=${cfg.nodeIp}"} \
-                        --pod-infra-container-image=pause \
                         ${optionalString (cfg.manifests != { }) "--pod-manifest-path=/etc/${manifestPath}"} \
                         ${optionalString (taints != "") "--register-with-taints=${taints}"} \
                         --root-dir=${top.dataDir} \