Fix S3 website redirection from key to key through routing rules

As specified in
http://docs.aws.amazon.com/AmazonS3/latest/dev/HowDoIWebsiteConfiguration.html
the correct name of the XML key is 'ReplaceKeyWith' instead of
'ReplaceKey'.
Add unit test for #1316
Merge branch 'mikewirth-develop' into develop

Closes #1316.

* mikewirth-develop:
  Add unit test for #1316
  Fix S3 website redirection from key to key through routing rules