move rsync.torproject.org to aroides.torproject.org
rsync.torproject.org currently points at asteria. Trying to do rsync transfers is frequently very slow, generally under 50kbps. aroides has a full copy of the website and has 10 gbps of bandwidth available.
I suggest we update dns to point rsync at aroides. As far as I can tell, creating a 'tor' rsync directory will work and everyone magically swaps over to aroides once dns is updated.