firecracker: generated code

```
swagger generate model -f ./firecracker-experimental.yaml --model-package=client/models --client-package=client
swagger generate client -f ./firecracker-experimental.yaml --model-package=client/models --client-package=client
```

Signed-off-by: Manohar Castelino <manohar.r.castelino@intel.com>

virtcontainers/pkg/firecracker/client/models/error.go

@@ -0,0 +1,44 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	strfmt "github.com/go-openapi/strfmt"
+
+	"github.com/go-openapi/swag"
+)
+
+// Error error
+// swagger:model Error
+type Error struct {
+
+	// A description of the error condition
+	// Read Only: true
+	FaultMessage string `json:"fault_message,omitempty"`
+}
+
+// Validate validates this error
+func (m *Error) Validate(formats strfmt.Registry) error {
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *Error) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *Error) UnmarshalBinary(b []byte) error {
+	var res Error
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}