revert use of jpa-sdk in unit testing

releng.wtpbuilder/distribution/wtp.tests/build.xml

@@ -111,7 +111,7 @@
             dir="${buildDirectory}/${buildLabel}"
             executable="unzip"
             failonerror="false">
-            <arg line="-o -qq wtp-jpa-sdk-${buildLabel}.zip -d ${testRoot}" />
+            <arg line="-o -qq wtp-jpa-${buildLabel}.zip -d ${testRoot}" />
         </exec>
         <exec
             dir="${buildDirectory}/${buildLabel}"