Manifest PUT should return 201 Created

Change handler, update descriptors table, regenerate API spec, and
update test.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>

docs/spec/api.md

@@ -1258,10 +1258,10 @@ The following parameters should be specified on the request:
 
 
 
-###### On Success: Accepted
+###### On Success: Created
 
 ```
-202 Accepted
+201 Created
 Location: <url>
 Content-Length: 0
 Docker-Content-Digest: <digest>

registry/api/v2/descriptors.go

@@ -523,7 +523,7 @@ var routeDescriptors = []RouteDescriptor{
 						Successes: []ResponseDescriptor{
 							{
 								Description: "The manifest has been accepted by the registry and is stored under the specified `name` and `tag`.",
-								StatusCode:  http.StatusAccepted,
+								StatusCode:  http.StatusCreated,
 								Headers: []ParameterDescriptor{
 									{
 										Name:        "Location",

registry/handlers/api_test.go

@@ -423,7 +423,7 @@ func TestManifestAPI(t *testing.T) {
 	checkErr(t, err, "building manifest url")
 
 	resp = putManifest(t, "putting signed manifest", manifestURL, signedManifest)
-	checkResponse(t, "putting signed manifest", resp, http.StatusAccepted)
+	checkResponse(t, "putting signed manifest", resp, http.StatusCreated)
 	checkHeaders(t, resp, http.Header{
 		"Location":              []string{manifestDigestURL},
 		"Docker-Content-Digest": []string{dgst.String()},
@@ -432,7 +432,7 @@ func TestManifestAPI(t *testing.T) {
 	// --------------------
 	// Push by digest -- should get same result
 	resp = putManifest(t, "putting signed manifest", manifestDigestURL, signedManifest)
-	checkResponse(t, "putting signed manifest", resp, http.StatusAccepted)
+	checkResponse(t, "putting signed manifest", resp, http.StatusCreated)
 	checkHeaders(t, resp, http.Header{
 		"Location":              []string{manifestDigestURL},
 		"Docker-Content-Digest": []string{dgst.String()},

registry/handlers/images.go

@@ -183,7 +183,7 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
 
 	w.Header().Set("Location", location)
 	w.Header().Set("Docker-Content-Digest", imh.Digest.String())
-	w.WriteHeader(http.StatusAccepted)
+	w.WriteHeader(http.StatusCreated)
 }
 
 // DeleteImageManifest removes the image with the given tag from the registry.