add integration test for smu node-type

Signed-off-by: Alexandra <alexandra.bach@eonerc.rwth-aachen.de>

tests/integration/node-smu.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+#
+# Integration loopback test using villas node for smu node-type.
+#
+# Author: Alexandra Bach <alexandra.bach@eonerc.rwth-aachen.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+echo "Test not yet supported"
+exit 99
+
+set -e
+
+DIR=$(mktemp -d)
+pushd ${DIR}
+
+function finish {
+    popd
+    rm -rf ${DIR}
+}
+trap finish EXIT
+
+mkdir ./logs
+
+cat > config.json <<EOF
+{
+    "nodes": {
+        "smu-node": {
+            "type": "smu",
+            "signals": [
+                { name = "ch1" type = "float"},
+                { name = "ch2" type = "float"},
+                { name = "signal3" type = "float"},
+                { name = "signal4" type = "float"},
+                { name = "signal5" type = "float"},
+                { name = "signal6" type = "float"},
+                { name = "signal7" type = "float"}
+            ]
+            "vectorize": 1000,
+            "sample_rate": "FS_10kSPS"
+        }
+    },
+    "paths": [
+        {
+             "in": "smu-node"
+             "out": "test"
+        }
+    ]
+}
+EOF
+
+villas node config.json