RENAME RULE doesn't work with partitioned tables

Just noticed that RangeVarCallbackForRenameRule() was not updated to
handle partitioned tables, causing the following bug:

create table parted_table (a int) partition by list (a);
create table part partition of parted_table for values in (1);
create rule parted_table_insert as on insert to parted_table
do instead insert into part values (new.*);
alter rule parted_table_insert on parted_table
rename to parted_table_insert_redirect;
-- ERROR: "parted_table" is not a table or view

Attached fixes this and adds a test. Added to open items list.

Thanks,
Amit