HBASE-23176 Fix for delete_table_snapshots.rb

Author: karthikhw

hbase-shell/src/main/ruby/shell/commands/delete_table_snapshots.rb

@@ -43,7 +43,8 @@ def command(tableNameregex, snapshotNameRegex = '.*')
         count = list.size
         list.each do |snapshot|
           creation_time = Time.at(snapshot.getCreationTime / 1000).to_s
-          formatter.row([snapshot.getName, snapshot.getTable + ' (' + creation_time + ')'])
+          formatter.row([snapshot.getName, snapshot.getTableNameAsString +
+            ' (' + creation_time + ')'])
         end
         puts "\nDelete the above #{count} snapshots (y/n)?" unless count == 0
         answer = 'n'