Implemented DigitalOcean LoadBalancer module

GoCloud PR#81: Implemented DigitalOcean LoadBalancer module

Basic Information

Pull Request: PR#81: Implemented DigitalOcean LoadBalancer module

Work

• Implemented DigitalOcean LoadBalancer module.
• Added test cases, examples and documentation for the same.

Functions implemented

• Createloadbalancer(): Createloadbalancer function creates a new load balancer.
• Deleteloadbalancer(): Deleteloadbalancer function deletes a load balancer.
• Listloadbalancer(): Listloadbalancer function lists load balancers.
• Attachnodewithloadbalancer(): Attachnodewithloadbalancer function attaches a load balancer to a droplet.
• Detachnodewithloadbalancer(): Detachnodewithloadbalancer function detaches a load balancer from a droplet.