Add basic unit-test for changelog

lutoff

21.43.2006 1ac3e8ea9ac6ba0b5b4ace3b8e46a9b36285147f

 opendj-sdk/opends/ext/testng/testng.xml

@@ -17,6 +17,7 @@
            <package name="org.opends.server.tasks"/>
            <package name="org.opends.server.plugins"/>
            <package name="org.opends.server.types"/>
            <package name="org.opends.server.changelog"/>
        </packages>
    </test>