[hotfix] Make tests passing for jdk 17+

Author: reswqa

flink-connector-elasticsearch-e2e-tests/flink-connector-elasticsearch6-e2e-tests/pom.xml

@@ -35,6 +35,8 @@ under the License.
 
 	<properties>
 		<elasticsearch.version>6.8.20</elasticsearch.version>
+		<surefire.module.config><!-- required by
+		Elasticsearch6SinkE2ECase -->  --add-opens=java.base/java.util=ALL-UNNAMED </surefire.module.config>
 	</properties>
 
 	<dependencies>

flink-connector-elasticsearch-e2e-tests/flink-connector-elasticsearch7-e2e-tests/pom.xml

@@ -35,6 +35,8 @@ under the License.
 
 	<properties>
 		<elasticsearch.version>7.10.2</elasticsearch.version>
+		<surefire.module.config><!-- required by
+		Elasticsearch7SinkE2ECase -->  --add-opens=java.base/java.util=ALL-UNNAMED </surefire.module.config>
 	</properties>
 
 	<dependencies>

flink-connector-elasticsearch-e2e-tests/pom.xml

@@ -39,6 +39,11 @@ under the License.
 		<module>flink-connector-elasticsearch7-e2e-tests</module>
     </modules>
 
+	<properties>
+		<surefire.module.config><!-- required by
+		Elasticsearch6SinkE2ECase -->  --add-opens=java.base/java.util=ALL-UNNAMED </surefire.module.config>
+	</properties>
+
 	<profiles>
 		<profile>
 			<id>run-end-to-end-tests</id>
@@ -63,6 +68,7 @@ under the License.
 									<systemPropertyVariables>
 										<moduleDir>${project.basedir}</moduleDir>
 									</systemPropertyVariables>
+									<argLine>${flink.surefire.baseArgLine} -Xmx${flink.XmxUnitTest}</argLine>
 								</configuration>
 							</execution>
 						</executions>

flink-connector-elasticsearch6/pom.xml

@@ -37,6 +37,8 @@ under the License.
 	<!-- Allow users to pass custom connector versions -->
 	<properties>
 		<elasticsearch.version>6.8.20</elasticsearch.version>
+		<surefire.module.config><!-- required by
+		Elasticsearch6DynamicSinkITCase -->  --add-opens=java.base/java.util=ALL-UNNAMED </surefire.module.config>
 	</properties>
 
 	<dependencies>

flink-connector-elasticsearch7/pom.xml

@@ -37,6 +37,8 @@ under the License.
 	<!-- Allow users to pass custom connector versions -->
 	<properties>
 		<elasticsearch.version>7.10.2</elasticsearch.version>
+		<surefire.module.config><!-- required by
+		Elasticsearch7DynamicSinkITCase -->  --add-opens=java.base/java.util=ALL-UNNAMED </surefire.module.config>
 	</properties>
 
 	<dependencies>

pom.xml

@@ -68,6 +68,9 @@ under the License.
 		<test.randomization.seed/>
 
 		<flink.parent.artifactId>flink-connector-elasticsearch-parent</flink.parent.artifactId>
+		<!-- These 2 properties should be removed together with upgrade of flink-connector-parent to 1.1.x -->
+		<flink.surefire.baseArgLine>-XX:+UseG1GC -Xms256m -XX:+IgnoreUnrecognizedVMOptions ${surefire.module.config}</flink.surefire.baseArgLine>
+		<surefire.module.config/>
 	</properties>
 
 	<dependencies>