Server Scope always grants ALL

In it's current state the following two commands result in ALL on SERVER server1:

GRANT SELECT ON SERVER server1 TO ROLE read_role;
GRANT INSERT ON SERVER server1 TO ROLE insert_role;

This can cause users to unknowingly grant full privileges to user groups. Fixing this behavior will also allow us to mimic the previous behavior exhibited with Policy Files:

read_role = server=server1->db=>table=>action=select
insert_role = server=server1->db=>table=>action=insert

Granting SELECT on SERVER would be far more pleasant than granting SELECT on each individual DATABASE