Change role names used in trigger test.

The choices made in commit 01463e1cc might pose copyright hazards,
and are more cutesy than informative anyway.

Reported-by: Noah Misch <noah@leadboat.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20250415155850.9b.nmisch@google.com

src/test/regress/expected/triggers.out

@@ -3535,8 +3535,8 @@ drop table parent, child;
 drop function f();
 -- Test who runs deferred trigger functions
 -- setup
-create role regress_groot;
-create role regress_outis;
+create role regress_caller;
+create role regress_fn_owner;
 create function whoami() returns trigger language plpgsql
 as $$
 begin
@@ -3544,7 +3544,7 @@ begin
   return null;
 end;
 $$;
-alter function whoami() owner to regress_outis;
+alter function whoami() owner to regress_fn_owner;
 create table defer_trig (id integer);
 grant insert on defer_trig to public;
 create constraint trigger whoami after insert on defer_trig
@@ -3553,23 +3553,23 @@ create constraint trigger whoami after insert on defer_trig
   execute function whoami();
 -- deferred triggers must run as the user that queued the trigger
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (1);
 reset role;
-set role regress_outis;
+set role regress_fn_owner;
 insert into defer_trig values (2);
 reset role;
 commit;
-NOTICE:  I am regress_groot
-NOTICE:  I am regress_outis
+NOTICE:  I am regress_caller
+NOTICE:  I am regress_fn_owner
 -- security definer functions override the user who queued the trigger
 alter function whoami() security definer;
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (3);
 reset role;
 commit;
-NOTICE:  I am regress_outis
+NOTICE:  I am regress_fn_owner
 alter function whoami() security invoker;
 -- make sure the current user is restored after error
 create or replace function whoami() returns trigger language plpgsql
@@ -3581,11 +3581,11 @@ begin
 end;
 $$;
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (4);
 reset role;
 commit;  -- error expected
-NOTICE:  I am regress_groot
+NOTICE:  I am regress_caller
 ERROR:  division by zero
 CONTEXT:  SQL statement "SELECT 1 / 0"
 PL/pgSQL function whoami() line 4 at PERFORM
@@ -3598,5 +3598,5 @@ select current_user = session_user;
 -- clean up
 drop table defer_trig;
 drop function whoami();
-drop role regress_outis;
-drop role regress_groot;
+drop role regress_fn_owner;
+drop role regress_caller;

src/test/regress/sql/triggers.sql

@@ -2701,8 +2701,8 @@ drop function f();
 -- Test who runs deferred trigger functions
 
 -- setup
-create role regress_groot;
-create role regress_outis;
+create role regress_caller;
+create role regress_fn_owner;
 create function whoami() returns trigger language plpgsql
 as $$
 begin
@@ -2710,7 +2710,7 @@ begin
   return null;
 end;
 $$;
-alter function whoami() owner to regress_outis;
+alter function whoami() owner to regress_fn_owner;
 
 create table defer_trig (id integer);
 grant insert on defer_trig to public;
@@ -2721,10 +2721,10 @@ create constraint trigger whoami after insert on defer_trig
 
 -- deferred triggers must run as the user that queued the trigger
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (1);
 reset role;
-set role regress_outis;
+set role regress_fn_owner;
 insert into defer_trig values (2);
 reset role;
 commit;
@@ -2732,7 +2732,7 @@ commit;
 -- security definer functions override the user who queued the trigger
 alter function whoami() security definer;
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (3);
 reset role;
 commit;
@@ -2749,7 +2749,7 @@ end;
 $$;
 
 begin;
-set role regress_groot;
+set role regress_caller;
 insert into defer_trig values (4);
 reset role;
 commit;  -- error expected
@@ -2758,5 +2758,5 @@ select current_user = session_user;
 -- clean up
 drop table defer_trig;
 drop function whoami();
-drop role regress_outis;
-drop role regress_groot;
+drop role regress_fn_owner;
+drop role regress_caller;