remove changeHeaders prefix match

Author: disoul

qiniu/storage/rs.js

@@ -646,11 +646,10 @@ exports.changeMimeOp = function(bucket, key, newMime) {
 exports.changeHeadersOp = function(bucket, key, headers) {
   var encodedEntryURI = util.encodedEntry(bucket, key);
   var prefix = 'x-qn-meta-!';
-  var prefixReg = /^x\-qn\-meta\-\!/;
   var path = '/chgm/' + encodedEntryURI;
   for (var headerKey in headers) {
     var encodedValue = util.urlsafeBase64Encode(headers[headerKey]);
-    var prefixedHeaderKey = headerKey.match(prefixReg) ? headerKey : prefix + headerKey;
+    var prefixedHeaderKey = prefix + headerKey;
     path += "/" + prefixedHeaderKey + "/" + encodedValue;
   }
 

test/rs.test.js

@@ -128,7 +128,7 @@ describe('test start bucket manager', function() {
 
       bucketManager.changeHeaders(bucket, key, {
         'Content-Type': 'text/plain',
-        'x-qn-meta-!Cache-Control': 'public, max-age=31566000',
+        'Cache-Control': 'public, max-age=31566000',
       },
         function (err, respBody, respInfo) {
           should.not.exist(err);