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

首先跟踪用于在 Guest Traffic 上启用 Network Service Providers 的现有 UI 操作及其触发的 API 调用。检查 VirtualRouter 和 VpcVirtualRouter 等 provider 元素是如何表示的，然后让启用流程通过一个现有按钮或单独的控件激活这些元素。完成的标准是可以从 UI 启用这些元素，而无需手动调用 API。

由索引模型根据 Issue 内容生成。