Remove the test options suppressing ignoring differences in whitespace
outputted in the XML to allow capturing of issues where the code
incorrectly adds or removes significant whitespace.
Add a helper function to deal with the edge case of parsing XML directly
that contains non significant whitespace to avoid accidentally adding
excess whitespace when minidom outputs the resulting document.
Change-Id: I9936042cd82c204ba2b3c19f575703e33564f7fd
tanhengyeow