use localfs instead of the class name of the adapter

Change-Id: If0c8fafbbc52bbe0f7ac3ec8b5f23781a8017390
Reviewed-on: https://asterix-gerrit.ics.uci.edu/706
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>
diff --git a/asterix-app/src/test/resources/optimizerts/queries/count-tweets.aql b/asterix-app/src/test/resources/optimizerts/queries/count-tweets.aql
index b46d573..f018358 100644
--- a/asterix-app/src/test/resources/optimizerts/queries/count-tweets.aql
+++ b/asterix-app/src/test/resources/optimizerts/queries/count-tweets.aql
@@ -29,7 +29,7 @@
 }
 
 create external dataset TwitterData(Tweet)
-using "org.apache.asterix.external.dataset.adapter.NCFileSystemAdapter"
+using localfs
 (("path"="asterix_nc1://data/twitter/smalltweets.txt"),("format"="adm"));
 
 write output to asterix_nc1:"/tmp/count-tweets.adm";