Retrieves information for all available flavors @return [Fog::Compute::RackspaceV2::Flavors] list of flavors @raise [Fog::Compute::RackspaceV2::NotFound] - HTTP 404 @raise [Fog::Compute::RackspaceV2::BadRequest] - HTTP 400 @raise [Fog::Compute::RackspaceV2::InternalServerError] - HTTP 500 @raise [Fog::Compute::RackspaceV2::ServiceError] @note Fog‘s currentl implementation only returns 1000 flavors.

Retrieve image @param [String] flavor_id id of flavor @return [Fog::Compute::RackspaceV2::Flavor] flavor @raise [Fog::Compute::RackspaceV2::NotFound] - HTTP 404 @raise [Fog::Compute::RackspaceV2::BadRequest] - HTTP 400 @raise [Fog::Compute::RackspaceV2::InternalServerError] - HTTP 500 @raise [Fog::Compute::RackspaceV2::ServiceError] @see docs.rackspace.com/servers/api/v2/cs-devguide/content/Get_Flavor_Details-d1e4317.html