可在创建角色后修改角色属性。
请求示例：
PUT /api/role/v1/roles/role_workflow HTTP/1.1
Authorization: Basic abcefgMWE=
Host: zfs-storage.example.com:215
Accept: application/json
Content-Type: application/json
Content-Length: 54
{"description":"Role allowing user to run workflows!"}
结果示例：
HTTP/1.1 202 Accepted
X-Zfssa-Appliance-Api: 1.0
Content-Type: application/json
Content-Length: 158
{
"role": {
"authorizations": [],
"description": "Role allowing user to run workflows!",
"href": "/api/role/v1/roles/role_workflow",
"name": "role_workflow"
}
}