Fixes #6682: Move the katello-debug.sh script instead of linking it

I have not been able to test this.. but I think it should work :)
Works fine, but small nitpick, should be 0-127 (usually 1).  I don't think any version of bash we ship is affected by this, but some used to really dislike negative numbers.

https://www.gnu.org/software/bash/manual/html_node/Exit-Status.html