nixos-mod/vmCommon: use FQDN to find config in auto update

nix/nixos-modules/vmCommon.nix

@@ -170,7 +170,7 @@ in
             "--no-use-registries"
             "--no-update-lock-file"
           ];
-          flake = lib.mkDefault "git+https://git.bananet.work/banananetwork/server"; # ===SYNC:general/meta/repo/url===
+          flake = lib.mkDefault "git+https://git.bananet.work/banananetwork/server#${config.networking.fqdnOrHostName}"; # ===SYNC:general/meta/repo/url===
           operation = "boot"; # change only on reboots
         };