---
features:
  - |
    ``has_{service_type}`` is a boolean config option that allows
    asserting that a given service does not exist or should not be used
    in a given cloud. Doing this will now cause the corresponding
    service ``Proxy`` object to not be created and in its place is
    an object that will throw exceptions if used.
  - |
    ``{service_type}_disabled_reason`` is a new string config option
    that can be set to indicate a reason why a service has been disabled.
    This string will be used in exceptions or log warnings emitted.

Add release note for new disable service functionality
Add release note for new disable service functionality

The behavior of disabling a service has changed slightly.

Change-Id: If7ee3aed6696308d15932c31f2ffb14486b30889
