Enable unit test for new TestAddressMask

dugan

19.50.2006 710cd56492d7e74029f9318eb0841b115f69e537

 opends/ext/testng/testng.xml

@@ -15,6 +15,7 @@
            <package name="org.opends.server.extensions"/>
            <package name="org.opends.server.tasks"/>
            <package name="org.opends.server.plugins"/>
            <package name="org.opends.server.types"/>
        </packages>
    </test>