OpenJDK8u181 workaround

Change-Id: I0b501040b572de810ccefbf70fbca13acfb4ce7b
diff --git a/pom.xml b/pom.xml
index f994206..8acde35 100644
--- a/pom.xml
+++ b/pom.xml
@@ -282,8 +282,9 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.16</version>
+				<version>2.22.1</version>
 				<configuration>
+          <useSystemClassLoader>false</useSystemClassLoader>
 					<excludes>
 						<exclude>**/benchmark/*</exclude>
 						<exclude>**/TestWPDIndex.java</exclude>