hosts/plover/profiles/hetzner-cloud-cx22: migrate certain settings to it as part of the profile

configs/nixos/plover/modules/profiles/hetzner-cloud-cx22.nix

@@ -1,7 +1,25 @@
-{ modulesPath, ... }:
+{ config, lib, pkgs, modulesPath, ... }:
 
 {
   imports = [
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
+
+  # Hetzner can only support non-UEFI bootloader (or at least it doesn't with
+  # systemd-boot).
+  boot.loader.grub = {
+    enable = lib.mkForce true;
+    efiSupport = true;
+    efiInstallAsRemovable = true;
+  };
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "virtio_pci" "virtio_scsi" "xhci_pci" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ "nvme" ];
+
+  zramSwap.enable = true;
+
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+
+  services.qemuGuest.enable = true;
+  systemd.services.qemu-guest-agent.path = [ pkgs.shadow ];
 }

configs/nixos/plover/modules/services/networking.nix

@@ -14,22 +14,6 @@ in
     lib.mkEnableOption "preferred networking setup";
 
   config = lib.mkIf cfg.enable {
-    # Hetzner can only support non-UEFI bootloader (or at least it doesn't with
-    # systemd-boot).
-    boot.loader.grub = {
-      enable = lib.mkForce true;
-      device = "/dev/sda";
-      efiSupport = true;
-      efiInstallAsRemovable = true;
-    };
-
-    boot.initrd.availableKernelModules = [ "ata_piix" "virtio_pci" "virtio_scsi" "xhci_pci" "sd_mod" "sr_mod" ];
-    boot.initrd.kernelModules = [ "nvme" ];
-
-    zramSwap.enable = true;
-
-    hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
-
     networking = {
       enableIPv6 = true;
       usePredictableInterfaceNames = lib.mkDefault true;