Allow CURRENT_ROLE where CURRENT_USER is accepted

In the particular case of GRANTED BY, this is specified in the SQL
standard.  Since in PostgreSQL, CURRENT_ROLE is equivalent to
CURRENT_USER, and CURRENT_USER is already supported here, adding
CURRENT_ROLE is trivial.  The other cases are PostgreSQL extensions,
but for the same reason it also makes sense there.

Reviewed-by: Vik Fearing <[email protected]>
Reviewed-by: Asif Rehman <[email protected]>
Reviewed-by: Alvaro Herrera <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/f2feac44-b4c5-f38f-3699-2851d6a76dc9%402ndquadrant.com

0 files changed, 0 insertions, 0 deletions