Add raccoon peer to wireguard

It routes traffic from fox, apex and the compute nodes so that we can
reach the git servers and tent.

Reviewed-by: Aleix Boné <abonerib@bsc.es>

m/common/base/net.nix

@@ -15,7 +15,6 @@
 
     hosts = {
       "84.88.53.236" = [ "ssfhead.bsc.es" "ssfhead" ];
-      "84.88.51.152" = [ "raccoon" ];
       "84.88.51.142" = [ "raccoon-ipmi" ];
     };
   };

m/common/ssf.nix

@@ -4,6 +4,7 @@
     ./xeon.nix
     ./ssf/fs.nix
     ./ssf/hosts.nix
+    ./ssf/hosts-remote.nix
     ./ssf/net.nix
     ./ssf/ssh.nix
   ];

m/common/ssf/hosts-remote.nix

@@ -0,0 +1,9 @@
+{ pkgs, ... }:
+
+{
+  networking.hosts = {
+    # Remote hosts visible from compute nodes
+    "10.106.0.236" = [ "raccoon" ];
+    "10.0.44.4" = [ "tent" ];
+  };
+}