create P2 metadata

releng.wtpbuilder/scripts/build/buildutilities.xml

@@ -512,6 +512,8 @@
                 line="-artifactRepositoryName Web-Tools-Platform-${buildLabel}"/>
             <arg
                 line="-updateSite ${buildDirectory}/${buildLabel}/updateSite"/>
+            <arg
+                line="-reusePack200Files"/>
             <arg
                 line="-compress"/>
             <arg