MLECO-2423: [Fix] Case insensitive name clash

* Fixed vww usage warnings (imageData in RunInferene and _GetImageIdx function)

Change-Id: I2c37e4e4cc8c8eca841690f2df8d525ed516ecc8
diff --git a/scripts/py/gen_test_data_cpp.py b/scripts/py/gen_test_data_cpp.py
index ea4bd6f..a58f415 100644
--- a/scripts/py/gen_test_data_cpp.py
+++ b/scripts/py/gen_test_data_cpp.py
@@ -85,7 +85,7 @@
     hex_line_generator = (', '.join(map(hex, sub_arr))
                           for sub_arr in np.array_split(fm_data, math.ceil(len(fm_data) / 20)))
 
-    env.get_template('testdata.cc.template').stream(common_template_header=hdr,
+    env.get_template('iofmdata.cc.template').stream(common_template_header=hdr,
                                                  include_h=header_filename,
                                                  var_name=array_name,
                                                  fm_data=hex_line_generator,