HBASE-17197 hfile does not work in 2.0

Files can be specified with -f option or without it.

Signed-off-by: Michael Stack <stack@apache.org>

hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFilePrettyPrinter.java

@@ -234,6 +234,9 @@ public class HFilePrettyPrinter extends Configured implements Tool {
       }
       mobFileLocations = new HashMap<String, List<Path>>();
     }
+
+    cmd.getArgList().forEach((file) -> files.add(new Path(file)));
+
     return true;
   }