Download links on aurora.apache.org point to old location

When attempting to download Aurora from the website, the user receives a 404 for any of the download links.

Old location: https://dist.apache.org/repos/dist/release/incubator/

New location:

• For current release: http://www.apache.org/dyn/mirrors/mirrors.cgi/aurora/0.7.0/
• For previous releases: https://archive.apache.org/dist/aurora/

This can be found on http://aurora.apache.org/downloads/