[SPARK-29567][TESTS] Update JDBC Integration Test Docker Images

Author: dongjoon-hyun

external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/MySQLIntegrationSuite.scala

@@ -27,7 +27,7 @@ import org.apache.spark.tags.DockerTest
 @DockerTest
 class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
   override val db = new DatabaseOnDocker {
-    override val imageName = "mysql:5.7.9"
+    override val imageName = "mysql:5.7.28"
     override val env = Map(
       "MYSQL_ROOT_PASSWORD" -> "rootpass"
     )
@@ -39,6 +39,8 @@ class MySQLIntegrationSuite extends DockerJDBCIntegrationSuite {
   }
 
   override def dataPreparation(conn: Connection): Unit = {
+    // Since MySQL 5.7.14+, we need to disable strict mode
+    conn.prepareStatement("SET GLOBAL sql_mode = 'NO_ENGINE_SUBSTITUTION'").executeUpdate()
     conn.prepareStatement("CREATE DATABASE foo").executeUpdate()
     conn.prepareStatement("CREATE TABLE tbl (x INTEGER, y TEXT(8))").executeUpdate()
     conn.prepareStatement("INSERT INTO tbl VALUES (42,'fred')").executeUpdate()

external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/PostgresIntegrationSuite.scala

@@ -29,7 +29,7 @@ import org.apache.spark.tags.DockerTest
 @DockerTest
 class PostgresIntegrationSuite extends DockerJDBCIntegrationSuite {
   override val db = new DatabaseOnDocker {
-    override val imageName = "postgres:11.4"
+    override val imageName = "postgres:12.0-alpine"
     override val env = Map(
       "POSTGRES_PASSWORD" -> "rootpass"
     )