1.5 Add session handler

[wstrm]

Functional description

Create a session handler for retrieving an AWS ECS session. This handler should return an ahfdeploy.Session (probably, maybe session.Session etc.) wrapper for the AWS ECS session.

For now, something like:

import "github.com/aws/aws-sdk-go/aws/session"

type Session struct {
  session *session.Session
}

should suffice as a wrapper type.

See: https://docs.aws.amazon.com/sdk-for-go/api/aws/session/ for documentation.

Tests on this issue

• [ ] Create a new session using ahfdeploy.NewSession(...) or session.New(...), depending on package structure

[wstrm]

Done.