Use new Azure CDN domain in sample torrc.
Use new Azure CDN domain in sample torrc.

https://lists.torproject.org/pipermail/tor-talk/2015-July/038496.html
https://trac.torproject.org/projects/tor/ticket/16634

infinity0/meek,projectarkc/meek,infinity0/meek,projectarkc/meek,infinity0/meek,projectarkc/meek,infinity0/meek,projectarkc/meek,projectarkc/meek,infinity0/meek