UI: Support enabling Elements of the Network Service Providers

##### ISSUE TYPE

* Improvement Request

In the UI, there is possibility to enable the Network Service Providers (e.g. VirtualRouter or VpcVirtualRouter) on the Guest Traffic - but that is not really possible until you enable the elements of those Network Service Providers (can be done in API, but not in UI).

Improve this to be able to enable Elements of each Network Service Provider - possibly do the needed API calls, but still with a single (existing) button, or possibly enable elements seprately (whatever is the easier way to do it) under each Network Service Provider

首先追蹤用於在 Guest Traffic 上啟用 Network Service Providers 的現有 UI 操作，以及它所觸發的 API 呼叫。檢查 VirtualRouter 和 VpcVirtualRouter 等 provider 元素是如何表示的，然後讓啟用流程透過一個現有按鈕或個別控制項啟用這些元素。完成的標準是可以從 UI 啟用這些元素，而不需要手動呼叫 API。

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