Bump PermGen

gradle/javaprojects.gradle

@@ -163,7 +163,7 @@ configurations.all {
 [compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
 
 project.tasks.matching { it instanceof Test && it.name != 'integrationTest' }.all {
-	jvmArgs = ['-ea', '-Xmx500m']
+	jvmArgs = ['-ea', '-Xmx500m', '-XX:MaxPermSize=512m']
 	maxParallelForks = guessMaxForks()
 	logging.captureStandardOutput(LogLevel.INFO)
 }