Move slurm control server to apex

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

m/module/slurm-client.nix

@@ -39,7 +39,7 @@ in {
 
   services.slurm = {
     client.enable = true;
-    controlMachine = "hut";
+    controlMachine = "apex";
     clusterName = "jungle";
     nodeName = [
       "owl[1,2]  Sockets=2 CoresPerSocket=14 ThreadsPerCore=2 Feature=owl"

m/module/slurm-server.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  services.slurm = {
+    server.enable = true;
+  };
+}