[163477] Lots of DeviceResourceExceptions in xml.ui JUnit tests.

tests/org.eclipse.wst.xml.ui.tests/build.properties

diff --git a/tests/org.eclipse.wst.xml.ui.tests/build.properties b/tests/org.eclipse.wst.xml.ui.tests/build.properties
index 15cc63c..51ac9f1 100644
--- a/tests/org.eclipse.wst.xml.ui.tests/build.properties
+++ b/tests/org.eclipse.wst.xml.ui.tests/build.properties
@@ -14,7 +14,8 @@
                META-INF/,\
                plugin.properties,\
                about.html,\
-               testresources/
+               testresources/,\
+               icons/
 jars.compile.order = xmluitests.jar
 source.xmluitests.jar = src/
 output.xmluitests.jar = bin/