Changes from pull request feedback

1. Use httptest.ResponseRecorder instead of custom implementation
StringResponseWriter.

2. Remove verbose log line in infohandler

Signed-off-by: Edward Wilde <ewilde@gmail.com>

gateway/types/inforequest.go

@@ -1,10 +1,5 @@
 package types
 
-import (
-	"bytes"
-	"net/http"
-)
-
 // GatewayInfo provides information about the gateway and it's connected components
 type GatewayInfo struct {
 	Provider *ProviderInfo `json:"provider"`
@@ -24,35 +19,3 @@ type VersionInfo struct {
 	SHA           string `json:"sha"`
 	Release       string `json:"release"`
 }
-
-// StringResponseWriter captures the handlers HTTP response in a buffer
-type StringResponseWriter struct {
-	body       *bytes.Buffer
-	headerCode int
-	header     http.Header
-}
-
-// NewStringResponseWriter create a new StringResponseWriter
-func NewStringResponseWriter() *StringResponseWriter {
-	return &StringResponseWriter{body: &bytes.Buffer{}, header: make(http.Header)}
-}
-
-// Header capture the Header information
-func (s StringResponseWriter) Header() http.Header {
-	return s.header
-}
-
-// Write captures the response data
-func (s StringResponseWriter) Write(data []byte) (int, error) {
-	return s.body.Write(data)
-}
-
-// WriteHeader captures the status code of the response
-func (s StringResponseWriter) WriteHeader(statusCode int) {
-	s.headerCode = statusCode
-}
-
-// Body returns the response body bytes
-func (s StringResponseWriter) Body() []byte {
-	return s.body.Bytes()
-}