Fix network-admin redirect

We need to redirect URLs like
http://docs.openstack.org/network-admin/admin/content/fedora_rpc_setup.html

The previous change contained an extra "/openstack/" - remove it.

Change-Id: I00c425f86f2826fdda045cb5db50c21e0322c0fb
Use CirrOS 0.3.1 instead of 0.3.0 in all guides

Change-Id: I13fe817c33a281d68fbecf18fa6e5077e80fc93e
backport: none
Merge "Fix network-admin redirect"
Merge "Use CirrOS 0.3.1 instead of 0.3.0 in all guides"