try some more extensive output since ls is finding the file

Author: laraPPr

test_suite.sh

@@ -168,8 +168,10 @@ env | grep "RFM_"
 
 # Make debugging easier by printing the final config file:
 echo "ReFrame config file used:"
-ls "${shared_fs_path}"
-ls "${RFM_CONFIG_FILES}"
+ls -l "${shared_fs_path}"
+ls -l "${RFM_CONFIG_FILES}"
+file "${RFM_CONFIG_FILES}"
+stat "${RFM_CONFIG_FILES}"
 cat "${RFM_CONFIG_FILES}"
 
 # Workaround for https://github.com/EESSI/software-layer/pull/467#issuecomment-1973341966