ADD job failed attribute to display failed status in API

If a compression processing job fails, the JobStatus object within the Job should update to reflect this fail.

src/main/java/com/ddf/vodsystem/dto/JobStatus.java

@@ -6,6 +6,7 @@ import lombok.Data;
 public class JobStatus {
     private ProgressTracker process = new ProgressTracker();
     private ProgressTracker conversion = new ProgressTracker();
+    private boolean failed = false;
 }