Bug 20800: Keep Koha on Stretch from using broken libhttp-oai-perl

Bug 20800: Keep Koha on Stretch from using broken libhttp-oai-perl

libhttp-oai-perl in Stretch is 4.03 and broken. Koha depends on
libhttp-oai-perl << 4 for that reason. To make the installation of Koha
on Stretch as easy as possible, this patch adds the alternative
libhttp-oai-3.27-perl which we provide in the Koha repository.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>