JobData : use allocationSize to avoid jobid gaps

scheduler/scheduler-server/src/main/java/org/ow2/proactive/scheduler/core/db/JobData.java

@@ -342,7 +342,7 @@ public class JobData implements Serializable {
 
     @Id
     @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "JOBID_SEQUENCE")
-    @SequenceGenerator(name = "JOBID_SEQUENCE", sequenceName = "JOBID_SEQUENCE")
+    @SequenceGenerator(name = "JOBID_SEQUENCE", sequenceName = "JOBID_SEQUENCE", allocationSize = 1, initialValue = 1)
     @Column(name = "ID")
     public Long getId() {
         return id;