Jdt ui leak test fails with Java 15

Change-Id: I72466ddfa3586a4728eace948404a7d66ffe861c
Signed-off-by: Kalyan Prasad Tatavarthi <kalyan_prasad@in.ibm.com>
diff --git a/org.eclipse.jdt.ui.tests/test.xml b/org.eclipse.jdt.ui.tests/test.xml
index c491bda..ff1fe8c 100644
--- a/org.eclipse.jdt.ui.tests/test.xml
+++ b/org.eclipse.jdt.ui.tests/test.xml
@@ -45,7 +45,7 @@
 
     <delete dir="${jdt-folder}" quiet="true"/>
     <condition property="java9vmargs" value="--add-opens java.base/jdk.internal.loader=ALL-UNNAMED --add-opens jdk.localedata/sun.util.resources.cldr.provider=ALL-UNNAMED --add-opens jdk.localedata/sun.util.resources.provider=ALL-UNNAMED --add-opens java.base/jdk.internal.module=ALL-UNNAMED --add-opens java.base/java.lang.module=ALL-UNNAMED --add-opens java.base/jdk.internal.reflect=ALL-UNNAMED --add-opens java.base/jdk.internal.ref=ALL-UNNAMED --add-opens java.base/jdk.internal.math=ALL-UNNAMED --add-opens java.base/jdk.internal.misc=ALL-UNNAMED --add-opens jdk.management/com.sun.management.internal=ALL-UNNAMED" else="">
-    	<javaversion atleast="9"/>
+    	<matches pattern="^(9|10|11|12|13|14|15)$" string="${ant.java.version}" />
     </condition>
     
 	<ant target="ui-test" antfile="${library-file}" dir="${eclipse-home}">