[FEAT]: Remove unnecessary fields and verify api

[vncloudsco]

Feature Description

We found that when configuring SSL through DNS validation, we found that there were too many unnecessary fields when they were aliases of each other, this really caused difficulties when configuring SSL for the domain, I think these things can be grouped into one, and more importantly, let's make an API to validate whether the information entered by the user can connect before storing and performing DNS validation by sending a request to check the http connection.