Add database roles used in testsuite

Actually only "tileuser" is currently used, but
"development_cartodb_user_3" is also referenced by the gadm4.sql
so I added that too.

test/sql/gadm4.sql

@@ -96,6 +96,9 @@ ALTER TABLE ONLY gadm4
     ADD CONSTRAINT bdll25_provincias_4326_2_pkey PRIMARY KEY (cartodb_id);
 
 CREATE INDEX bdll25_provincias_4326_2_the_geom_webmercator_idx ON gadm4 USING gist (the_geom_webmercator);
+
+-- development_cartodb_user_3 role
+CREATE USER development_cartodb_user_3;
 GRANT ALL ON TABLE gadm4 TO development_cartodb_user_3;
 GRANT SELECT ON TABLE gadm4 TO tileuser;
 

test/sql/windshaft.test.sql

@@ -15,6 +15,8 @@ SET search_path = public, pg_catalog;
 SET default_tablespace = '';
 SET default_with_oids = false;
 
+-- tileuser role
+CREATE USER tileuser;
 
 -- first table
 CREATE TABLE test_table (