Add placeholder templates dir

templates/common/common.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+#
+# Copyright 2023 Red Hat Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+set -e
+
+function merge_config_dir {
+    echo merge config dir $1
+    for conf in $(find $1 -type f); do
+        conf_base=$(basename $conf)
+
+        # If CFG already exist in ../merged and is not a json file,
+        # we expect for now it can be merged using crudini.
+        # Else, just copy the full file.
+        if [[ -f /var/lib/config-data/merged/${conf_base} && ${conf_base} != *.json ]]; then
+            echo merging ${conf} into /var/lib/config-data/merged/${conf_base}
+            crudini --merge /var/lib/config-data/merged/${conf_base} < ${conf}
+        else
+            echo copy ${conf} to /var/lib/config-data/merged/
+            cp -f ${conf} /var/lib/config-data/merged/
+        fi
+    done
+}