As a Korifi API user I want to be able to unbind from a managed service instance

[danail-branekov]

GIVEN I have bound an app to a managed service
WHEN I DELETE /v3/service_credential_bindings/my-binding-guid
THEN I get a 202 Accepted response with Location header ppointing me to a binding deletion job
THEN eventually I see the binding deletion job to succeed
THEN binding data should not be available to the app (after a restart/restage) any more

Dev notes:

• The implementation should call Unbind on the service broker

• When requesting unbind from the broker, the implementation should send the accepts_incomplete=true query parameter to enable async unbind

• When the broker unbinds the service in a sync manner (the broker responds with 200 OK), the implementation must not check for binding last operation as the binding has been already deleted and no operation is running

• When the broker responds with 202 Accepted, then the implementation should poll the binding last operation until the operation completes.

• If the operation succeeds, the CFServiceBinding along its credentials secrets should be deleted

• If the operation fails, the failure should be reflected in the CFServiceBinding status

• Unbind OSBAPI docs

• Binding last operation OSBAPI docs

• Synchronous vs asynchronous operations OSBAPI docs

• Managed services proposal

• Delete service binding docs