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Issue description

There is  a non-printing unicode characters in one of the paths "/var/lib/mysql" in the exercise. If the student copies that entry the grading script fails.

echo /<feff>var/lib/mysql | md5sum                                                                               
e01741d65a5974bea7e88d1b7f60e49e  -
echo /var/lib/mysql | md5sum                                                                                 
278dfa1dd1a9c89a71123588a815477f  -

https://github.com/RedHatTraining/DO180/blob/12cf435b94058c221b70ab1ea7cedce22f6cc866/content/compreview/deploy/review.adoc#L236

Steps to reproduce:

Workaround:

Expected result: