Multiple GRIS Endpoints
As requested in ticket https://rt.egi.eu/rt/Ticket/Display.html?id=3347. The Top-BDII needs the URL of each service endpoint's GRIS in order to be able to query them. GRIS information for each endpoint is to be stored in GOCDB.
To achieve this we propose adding support for multiple URL fields per service endpoint. In order to identify the type of URL we propose to add a classification to each URL field.