X go/neo: tests: Fixup neomigrate invocation

After NEO/py commit 9f1e4eef (Use argparse instead of optparse)
neomigrate signature changed:

* -s and -d were removed: src and dst are specified as just arguments;
* -q was added to silence importer-related warnings.

go/neo/client_test.go

@@ -211,8 +211,10 @@ func withNEOSrv(t *testing.T, f func(t *testing.T, nsrv NEOSrv), optv ...tOption
 			if opt.Preload != "" {
 				cmd := exec.Command("python", "-c",
 					"from neo.scripts.neomigrate import main; main()",
-					"-s", opt.Preload,
-					"-d", npy.MasterAddr(), "-c", npy.ClusterName())
+					"-q",
+					"-c", npy.ClusterName(),
+					opt.Preload,
+					npy.MasterAddr())
 				cmd.Stdin  = nil
 				cmd.Stdout = os.Stdout
 				cmd.Stderr = os.Stderr