treewide: curl: exit with error status on HTTP errors

This makes scripts fail early on request errors.
Previously, curl exited with status 0 when enountering HTTP error status
codes.
`-fsS` equals `--fail --silent --show-error`.

modules/lnd.nix

@@ -234,7 +234,7 @@ in {
         RestartSec = "10s";
         ReadWritePaths = [ cfg.dataDir ];
         ExecStartPost = let
-          curl = "${pkgs.curl}/bin/curl -s --show-error --cacert ${cfg.certPath}";
+          curl = "${pkgs.curl}/bin/curl -fsS --cacert ${cfg.certPath}";
           restUrl = "https://${nbLib.addressWithPort cfg.restAddress cfg.restPort}/v1";
         in
           # Setting macaroon permissions for other users needs root permissions