CRUD operations for Nginx nodes

[maaydin]

As an administrator on the Aungin
I want the ability to create/remove/update/delete remote Nginx servers as Nginx nodes
So that I may immediately operate Nginx servers which will be managed by Aungin

Acceptance Criteria:

• An Nginx node should have:
  • Required fields: Name, IP/Host, SSH user, SSH port, SSH Key
  • Optional fields: Data center, Cluster
• Validate required fields
• Generate success and failure messages after processing

Definition of Done:

• Passes testing per acceptance criteria items
• Able create/remove/update/delete remote nginx servers