made rename match with the test input tree

tests/variableTreeXml/exampleInputTree.txt

+/
+├── A
+│   ├── a
+│   │   ├── di
+│   │   └── do
+│   └── b
+├── B
+│   ├── a
+│   │   └── dr
+│   └── c
+│       ├── de
+│       └── gne
+├── C
+│   ├── a
+│   │   └── da
+│   ├── b
+│   │   └── ge
+│   └── c
+│       ├── be
+│       └── de
+└── DIRECT
+    ├── DOUBLE
+    ├── DOUBLE_ARRAY
+    ├── DOUBLT
+    ├── INT
+    └── INT_ARRAY
+

tests/variableTreeXml/rename.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <device_server xmlns="https://github.com/ChimeraTK/ControlSystemAdapter-DoocsAdapter">
-  <location name="DUMMY_LOCATION">
-    <property source="/A/b/cd/e" name="LOLO"/>
-    <property source="jo" name="yep"/>
+  <location name="DIRECT">
+    <property source="/A/b/do" name="LOLO"/>
+    <property source="INT" name="TEMP"/>
   </location>
 </device_server>