tree 996647b24ae19268a3820e8c3e85730edb6e6215
parent 6175b2d3c4f3ee03922853a72d8f78465d27fe0e
author zhufl <zhu.fanglei@zte.com.cn> 1532417058 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1532418472 +0800

Make instance_action_events.traceback a non-required field

instance_action_events.traceback can only be seen by admin users
with default policy.json,
"os_compute_api:os-instance-actions:events":
    "rule:admin_api or role:InstanceEvents"
so it should not be deemd as a required field in schema.
https://developer.openstack.org/api-ref/compute/#show-server-action-details

Change-Id: Id85c75347eba2b10b8ecc0ea262fd870281c610d
Closes-Bug: #1783275