re-enable the test case at0 for running aggregation; small fix after merging the latest hyracks master
diff --git a/asterix-app/src/test/resources/runtimets/testsuite.xml b/asterix-app/src/test/resources/runtimets/testsuite.xml
index 97a610a..a256fb5 100644
--- a/asterix-app/src/test/resources/runtimets/testsuite.xml
+++ b/asterix-app/src/test/resources/runtimets/testsuite.xml
@@ -14,13 +14,11 @@
  !-->
 <test-suite xmlns="urn:xml.testframework.asterix.ics.uci.edu" ResultOffsetPath="results" QueryOffsetPath="queries" QueryFileExtension=".aql">
   <test-group name="flwor">
-    <!-- commented due to issue 643 (build fails) 
     <test-case FilePath="flwor">
       <compilation-unit name="at00">
         <output-dir compare="Text">at00</output-dir>
       </compilation-unit>
     </test-case>
-    -->
     <test-case FilePath="flwor">
       <compilation-unit name="at01">
         <output-dir compare="Text">at01</output-dir>