Bug 17990: Refactor Perl module versions check

Bug 17990: Refactor Perl module versions check

The code is duplicated, variable are not set ($_), code is hard to read,
not covered by tests and the subroutine has 2 completely different
behaviors depending on the presence of the "module" parameter.
No need more ti rewrite it.

Test plan:
- Use koha_perl_deps.pl with the different options (-u -m -a -i)
- Go on the about page, "Perl modules" tab

You should not see any differences from before and after this patch

Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Mason James <mtj@kohaaloha.com>