Remove create task stdin/stdout/stderr fields. (#781)

Stdin/stdout/stderr fields can container full shim logger binary URIs
which may container sensitive information such as logging credentials.
Since there is no simple method for redacting this information at
runtime, the best solution is to not log them to disk.

Signed-off-by: Austin Vazquez <macedonv@amazon.com>

runtime/service.go

@@ -1146,12 +1146,10 @@ func (s *service) Create(requestCtx context.Context, request *taskAPI.CreateTask
 		return nil, err
 	}
 
+	// We don't log request.Stdin, request.Stdout, or request.Stderr as they may contain sensitive information.
 	logger.WithFields(logrus.Fields{
 		"bundle":     request.Bundle,
 		"terminal":   request.Terminal,
-		"stdin":      request.Stdin,
-		"stdout":     request.Stdout,
-		"stderr":     request.Stderr,
 		"checkpoint": request.Checkpoint,
 	}).Debug("creating task")