Do not get the SCM integration when showing the integration link

[EtienneM]

╰─$ go build -o ./scalingo/scalingo ./scalingo && DEBUG=1 ./scalingo/scalingo --region osc-fr1 --app my-app integration-link
[DEBUG]2019/09/24 14:17:16 [Regions] Use the cache
[DEBUG]2019/09/24 14:17:16 [AppDetect] App name is my-app
[DEBUG]2019/09/24 14:17:16 [Regions] Use the cache
[DEBUG]2019/09/24 14:17:16 [API] POST https://auth.scalingo.com/v1/tokens/exchange
[DEBUG]2019/09/24 14:17:16       User Agent: 
[DEBUG]2019/09/24 14:17:16       Headers: map[User-Agent:[]]
[DEBUG]2019/09/24 14:17:16       Params: map[]
[DEBUG]2019/09/24 14:17:16       Request ID: 619d9539-f619-48a1-a668-b7da855f9b70
[DEBUG]2019/09/24 14:17:16       Duration: 243.335141ms
[DEBUG]2019/09/24 14:17:16 [API] GET https://api.osc-fr1.scalingo.com/v1/apps/my-app/scm_repo_link?
[DEBUG]2019/09/24 14:17:16       User Agent: Scalingo CLI v1.16.1
[DEBUG]2019/09/24 14:17:16       Headers: map[User-Agent:[Scalingo CLI v1.16.1]]
[DEBUG]2019/09/24 14:17:16       Params: map[]
[DEBUG]2019/09/24 14:17:16       Request ID: 51235409-d8cd-4c0b-80f4-d9a87a24496f
[DEBUG]2019/09/24 14:17:16       Duration: 93.161496ms
[DEBUG]2019/09/24 14:17:16 {"scm_repo_link":{"id":"","app_id":"","linker":{"username":"","email":"","id":"us-"},"owner":"Scalingo","repo":"myapp","branch":"develop","scm_type":"gitlab-self-hosted","created_at":"2019-09-23T10:11:03.360Z","updated_at":"2019-09-24T09:37:51.886Z","auto_deploy_enabled":true,"scm_integration_uuid":"","auth_integration_uuid":"","deploy_review_apps_enabled":true,"delete_on_close_enabled":true,"hours_before_delete_on_close":0,"delete_stale_enabled":false,"hours_before_delete_stale":0,"last_auto_deploy_at":null}}
Application: my-app (5d889a20fb0de6000ef4cc6f)
Integration: GitLab self-hosted (932ed9f8-2eb4-4dfc-b4a9-5060593d0b46)
Linker: Oim

Repository: Scalingo/myapp
Auto Deploy: ✔ develop
Review Apps Deploy: ✔
        Destroy on Close: instantly
        Destroy on Stale: ✘

Fix #491

Waiting for Scalingo/go-scalingo#139 to be merged

[johnsudaar]

LGTM