REST API Changes

Security improvement: Hide exception details in API responses

API error responses should not include exception and class information, as this could reveal internal implementation details to an attacker.

Turbonomic now disables the output details for security exceptions by default. The API caller can still understand the nature of an error by inspecting the type and message fields.

Removal of API parameters for the /action/availablemodes API call

API Parameters *entity_type and *action_type have been removed from the /action/availablemodes API call.