'cluster_id' column not in 'openstack cluster event list'

'cluster_id' column show in 'senlin event-list',but not in 'openstack cluster event list'.'cluster_id' is a filters key, we'd better to show this to help set 'cluster_id' filters key value.

 openstack cluster event list --limit 5
+----------+---------------------+----------+----------+-----------+---------------+-----------+---------------------+-------+
| id | generated_at | obj_type | obj_id | obj_name | action | status | status_reason | level |
+----------+---------------------+----------+----------+-----------+---------------+-----------+---------------------+-------+
| f945c8cf | 2016-11-10T12:14:55 | CLUSTER | 8a78b66f | mycluster | CLUSTER_CHECK | START | The action is being | INFO |
| | +00:00 | | | | | | processed. | |
| 84a8fc72 | 2016-11-10T12:14:56 | NODE | 827b503f | mynode1 | NODE_CHECK | START | The action is being | INFO |
| | +00:00 | | | | | | processed. | |
| a77031d4 | 2016-11-10T12:14:57 | NODE | 827b503f | mynode1 | NODE_CHECK | SUCCEEDED | Node status is | INFO |
| | +00:00 | | | | | | ACTIVE. | |
| 44d8f01f | 2016-11-10T12:14:59 | CLUSTER | 8a78b66f | mycluster | CLUSTER_CHECK | SUCCEEDED | Cluster checking | INFO |
| | +00:00 | | | | | | completed. | |
| c47ef9be | 2016-11-10T12:15:55 | CLUSTER | 8a78b66f | mycluster | CLUSTER_CHECK | START | The action is being | INFO |
| | +00:00 | | | | | | processed. | |
+----------+---------------------+----------+----------+-----------+---------------+-----------+---------------------+-------+

root@tecs:/home/openstack/senlin# senlin event-list -l 5
WARNING (shell) "senlin event-list" is deprecated and will be removed by Apr 2017, please use "openstack cluster event list" instead.
+----------+---------------------------+----------+----------+-----------+----------------+-----------+-------+------------+
| id | timestamp | obj_type | obj_id | obj_name | action | status | level | cluster_id |
+----------+---------------------------+----------+----------+-----------+----------------+-----------+-------+------------+
| 09537d3a | 2016-11-12T02:38:42+00:00 | CLUSTER | f23ff00c | mycluster | CLUSTER_CREATE | START | INFO | f23ff00c |
| 14f63e87 | 2016-11-12T02:40:31+00:00 | NODE | 8422bd48 | mynode1 | NODE_DELETE | START | INFO | f23ff00c |
| 6d4eddce | 2016-11-12T02:39:15+00:00 | NODE | 8422bd48 | mynode1 | NODE_CREATE | FAILED | ERROR | f23ff00c |
| d48467fc | 2016-11-12T02:38:42+00:00 | CLUSTER | f23ff00c | mycluster | CLUSTER_CREATE | SUCCEEDED | INFO | f23ff00c |
| f2994e79 | 2016-11-12T02:39:09+00:00 | NODE | 8422bd48 | mynode1 | NODE_CREATE | START | INFO | f23ff00c |
+----------+---------------------------+----------+----------+-----------+----------------+-----------+-------+------------+