Update json (#463)

* wip

* wip

* Added more fields to JSON and added blank line between objects.

* Update tests.

* wip

* Updated to represent recent discussions.

* Fixed up the json test

* More docs

* Changed from blank line to bracket, newline, open bracket.

* Blank line added back, easier for delimiting.

api/agent/protocol/default.go

@@ -1,12 +1,14 @@
 package protocol
 
 import (
+	"context"
 	"io"
-	"net/http"
 )
 
 // DefaultProtocol is the protocol used by cold-containers
 type DefaultProtocol struct{}
 
-func (p *DefaultProtocol) IsStreamable() bool                            { return false }
-func (d *DefaultProtocol) Dispatch(w io.Writer, req *http.Request) error { return nil }
+func (p *DefaultProtocol) IsStreamable() bool { return false }
+func (d *DefaultProtocol) Dispatch(ctx context.Context, ci CallInfo, w io.Writer) error {
+	return nil
+}