[#306] In APE buckets forbid canned acl except private

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

api/handler/copy_test.go

@@ -22,6 +22,7 @@ type CopyMeta struct {
 	Tags              map[string]string
 	MetadataDirective string
 	Metadata          map[string]string
+	Headers           map[string]string
 }
 
 func TestCopyWithTaggingDirective(t *testing.T) {
@@ -279,6 +280,10 @@ func copyObject(hc *handlerContext, bktName, fromObject, toObject string, copyMe
 	}
 	r.Header.Set(api.AmzTagging, tagsQuery.Encode())
 
+	for key, val := range copyMeta.Headers {
+		r.Header.Set(key, val)
+	}
+
 	hc.Handler().CopyObjectHandler(w, r)
 	assertStatus(hc.t, w, statusCode)
 }