Set uk-ogl license to open
Set uk-ogl license to open

The uk-ogl license, mainly used by data.gov.uk was falsely seen as a
closed license. With this change, data.gov.uk should have a much better
result in the license metric.

Signed-off-by: Konrad Reiche <4ff0213f56e2082fcd8c882d04c546881c579ce4@gmail.com>

platzhirsch/metadata-census