don't run integration tests in Java 8 (they hang on https://ci-builds.apache.org/)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1909749 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/poi-integration/build.gradle b/poi-integration/build.gradle
index 93a39df..95f8c1d 100644
--- a/poi-integration/build.gradle
+++ b/poi-integration/build.gradle
@@ -139,10 +139,16 @@
 test {
     // exclude these from the normal test-run
     exclude '**/*FileHandler.class'
+    if (jdkVersion == 8)  {
+        exclude '**/*.class'
+    }
 
     dependsOn { testJar }
 
     systemProperties['junit.jupiter.execution.parallel.enabled'] = 'true'
+    if (jdkVersion == 8)  {
+        systemProperties['sun.java2d.renderer'] = 'sun.java2d.marlin.MarlinRenderingEngine'
+    }
 
     doFirst {
         jvmArgs += [