Fix tests on java 11 (#387)

Author: timja

Jenkinsfile

@@ -1,5 +1,5 @@
 properties([buildDiscarder(logRotator(numToKeepStr: '20'))])
-node('maven') {
+node('maven-11') {
     checkout scm
     timeout(time: 1, unit: 'HOURS') {
         // TODO Azure mirror

src/it/powermock/src/test/java/test/XTest.java

@@ -7,11 +7,13 @@
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PowerMockIgnore;
 import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.modules.junit4.PowerMockRunner;
 
 @RunWith(PowerMockRunner.class)
 @PrepareForTest(Jenkins.class)
+@PowerMockIgnore({"com.sun.org.apache.xerces.*", "javax.xml.*", "org.xml.*"})
 public class XTest {
 
     @Mock