Include slf4j jar in data-services clients
<path id="axis2.class.path">
<fileset dir="${wso2ds.home}">
<include name="wso2/lib/*.jar" />
+ <include name="wso2/components/plugins/slf4j.api_*.jar" />
<include name="wso2/components/plugins/joda-time_*.jar" />
</fileset>
</path>
