Adjust Flyway test to avoid using public schema

The public schema is gone in recent PostgreSQL versions so let's not use
it anymore.

integration-tests/flyway/src/main/java/io/quarkus/it/flyway/FlywayFunctionalityResource.java

@@ -71,7 +71,7 @@ public String returnInitSql() {
     @GET
     @Path("init-sql-result")
     public Integer returnInitSqlResult() {
-        return (Integer) entityManager.createNativeQuery("SELECT f_my_constant()")
+        return (Integer) entityManager.createNativeQuery("SELECT TEST_SCHEMA.f_my_constant()")
                 .getSingleResult();
     }
 

integration-tests/flyway/src/main/resources/application.properties

@@ -22,7 +22,7 @@ quarkus.flyway.placeholders.foo=bar
 quarkus.flyway.placeholders.title=REPLACED
 quarkus.flyway.placeholder-prefix=#[
 quarkus.flyway.placeholder-suffix=]
-quarkus.flyway.init-sql=CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$;
+quarkus.flyway.init-sql=CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION TEST_SCHEMA.f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$;
 quarkus.hibernate-orm.database.generation=validate
 
 # second Agroal config
@@ -33,4 +33,4 @@ quarkus.flyway.second-datasource.locations=db/location3
 quarkus.flyway.second-datasource.sql-migration-prefix=V
 quarkus.flyway.second-datasource.migrate-at-start=true
 quarkus.flyway.second-datasource.placeholders.mambo=poa
-
+quarkus.flyway.second-datasource.init-sql=CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;

integration-tests/flyway/src/main/resources/db/location3/V1.0.0__Quarkus.sql

@@ -1,7 +1,8 @@
-CREATE TABLE multiple_flyway_test
+
+CREATE TABLE TEST_SCHEMA.multiple_flyway_test
 (
     id   INT,
     name VARCHAR(255)
 );
-INSERT INTO multiple_flyway_test(id, name)
+INSERT INTO TEST_SCHEMA.multiple_flyway_test(id, name)
 VALUES (1, 'Multiple flyway datasources should work seamlessly in JVM and native mode');

integration-tests/flyway/src/main/resources/db/location3/afterMigrate.sql

@@ -1 +1 @@
-select count(1) from multiple_flyway_test;
+select count(1) from TEST_SCHEMA.multiple_flyway_test;

integration-tests/flyway/src/test/java/io/quarkus/it/flyway/FlywayFunctionalityTest.java

@@ -46,10 +46,10 @@ public void testPlaceholdersPrefixSuffix() {
     }
 
     @Test
-    @DisplayName("Returns whether the init-sql is CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$; or not")
+    @DisplayName("Returns whether the init-sql is CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION TEST_SCHEMA.f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$; or not")
     public void testReturnInitSql() {
         when().get("/flyway/init-sql").then().body(is(
-                "CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$;"));
+                "CREATE SCHEMA IF NOT EXISTS TEST_SCHEMA;CREATE OR REPLACE FUNCTION TEST_SCHEMA.f_my_constant() RETURNS integer LANGUAGE plpgsql as $func$ BEGIN return 100; END $func$;"));
     }
 
     @Test