修改警报操作

此操作可修改现有警报操作。

请求示例：

PUT /api/alert/v1/actions/actions-001/action-000 HTTP/1.1
Host: zfssa.example.com:215
X-Auth-Session: uerqghq84vbdv
Content-Type: application/json
Content-Length: 28

{"address": "Joseph.Admin@acme.com"}

响应示例：

HTTP/1.1 202 Accepted
X-Zfssa-Appliance-Api: 1.0
Content-Type: application/json
Content-Length: 176
X-Zfssa-Version: jkremer/generic@2013.06.08,1-0

{
    "action": {
        "href": "/api/alert/v1/actions/actions-001
                 /action-000",
        "handler": "email",
        "address": "Joseph.Admin@acme.com",
        "subject": "CPU Busy"
    }
}