dist.ini: add Test::EOL.

I am not sure why the release tests started running, but presuming we
care, we should have this module for them.
EOL: fix line endings.
EOL: remove trailing whitespace.
dist.ini: EOLTests to Test::EOL
Merge pull request #708 from duckduckgo/mwm/eol

dist.ini: add Test::EOL.