nixos/treewide: Move rename.nix imports to their respective modules

A centralized list for these renames is not good because:
- It breaks disabledModules for modules that have a rename defined
- Adding/removing renames for a module means having to find them in the
central file
- Merge conflicts due to multiple people editing the central file

nixos/modules/virtualisation/ec2-data.nix

@@ -7,6 +7,10 @@
 with lib;
 
 {
+  imports = [
+    (mkRemovedOptionModule [ "ec2" "metadata" ] "")
+  ];
+
   config = {
 
     systemd.services.apply-ec2-data =

nixos/modules/virtualisation/libvirtd.nix

@@ -28,6 +28,11 @@ let
 
 in {
 
+  imports = [
+    (mkRemovedOptionModule [ "virtualisation" "libvirtd" "enableKVM" ]
+      "Set the option `virtualisation.libvirtd.qemuPackage' instead.")
+  ];
+
   ###### interface
 
   options.virtualisation.libvirtd = {

nixos/modules/virtualisation/vmware-guest.nix

@@ -8,6 +8,10 @@ let
   xf86inputvmmouse = pkgs.xorg.xf86inputvmmouse;
 in
 {
+  imports = [
+    (mkRenamedOptionModule [ "services" "vmwareGuest" ] [ "virtualisation" "vmware" "guest" ])
+  ];
+
   options.virtualisation.vmware.guest = {
     enable = mkEnableOption "VMWare Guest Support";
     headless = mkOption {

nixos/modules/virtualisation/xen-dom0.nix

@@ -9,6 +9,11 @@ let
 in
 
 {
+  imports = [
+    (mkRemovedOptionModule [ "virtualisation" "xen" "qemu" ] "You don't need this option anymore, it will work without it.")
+    (mkRenamedOptionModule [ "virtualisation" "xen" "qemu-package" ] [ "virtualisation" "xen" "package-qemu" ])
+  ];
+
   ###### interface
 
   options = {