scion: rename binaries

These are the names of the binaries as they are distributed in some
places. Upstream systemd services even depend upon these names, it is
going to be helpful to keep this naming consistent, for bootstrapping

pkgs/by-name/sc/scion/package.nix

@@ -42,6 +42,16 @@ buildGoModule {
     ${skipTest 1 "TestOpensslCompatible" "scion-pki/trcs/sign_test.go"}
   '';
 
+  postInstall = ''
+    set +e
+    mv $out/bin/gateway $out/bin/scion-ip-gateway
+    mv $out/bin/dispatcher $out/bin/scion-dispatcher
+    mv $out/bin/router $out/bin/scion-router
+    mv $out/bin/control $out/bin/scion-control
+    mv $out/bin/daemon $out/bin/scion-daemon
+    set -e
+  '';
+
   doCheck = true;
 
   patches = [