nix.nixos-configurations.{devServer,hypervisor1}: fix configuration

devServer and hypervisor1 had configurations that were different from
how they were on master before the flake-parts migration. Fixed these
and checked the closure differences with @sarcasticadmin. Now the only
apparent difference besides dumb system packages strings is coreMaster's
bind serial number which is expected to be different.

nix/nixos-configurations/dev-server/default.nix

@@ -19,9 +19,9 @@
           base.enable = true;
           libvirt.enable = true;
           services.gitlab.enable = true;
-          services.prometheus.enable = true;
-          services.ssh4vms.enable = true;
-          timeServers.enable = true;
+          services.prometheus.enable = false;
+          services.ssh4vms.enable = false;
+          timeServers.enable = false;
 
           users.berkhan.enable = true;
           users.dlang.enable = true;

nix/nixos-configurations/hypervisor1/default.nix

@@ -19,6 +19,7 @@
         scale-network = {
           base.enable = true;
           services.prometheus.enable = true;
+          libvirt.enable = true;
 
           users.berkhan.enable = true;
           users.dlang.enable = true;