fixing hudson headless tests failure
diff --git a/modeling/releng/org.eclipse.pde.ds.releng/testing.properties b/modeling/releng/org.eclipse.pde.ds.releng/testing.properties
index 1f006d4..a5fe6a4 100644
--- a/modeling/releng/org.eclipse.pde.ds.releng/testing.properties
+++ b/modeling/releng/org.eclipse.pde.ds.releng/testing.properties
@@ -3,3 +3,5 @@
 
 #map name of test plugin to testsuite class to run
 org.eclipse.pde.ds.tests.suite=org.eclipse.pde.ds.scr.tests.ScrAllTests
+
+extraVMargs=-Dorg.eclipse.swt.browser.XULRunnerPath=/shared/common/mozilla-xulrunner181-1.8.1.4-30.ppc