Log copying during dotnet-install.sh

There's an issue copying some of the files and I can't identify it
specifically. I need to see it in the test output.

I will revert this when I have identified and fixed the problem.

scripts/obtain/dotnet-install.sh

@@ -544,6 +544,7 @@ copy_files_or_dirs_from_list() {
         local target="$out_path"/"$path"
         if [ "$override" = true ] || (! ([ -d "$target" ] || [ -e "$target" ])); then
             mkdir -p "$out_path"/"$(dirname "$path")"
+            say "cp -R $override_switch $root_path/$path $target"
             cp -R "$override_switch" "$root_path"/"$path" "$target"
         fi
     done