hosts: SSH into shell servers as root

Using `sudo`, through the Ansible feature `become`, is problematic
due to hashbang/shell-etc#74 : sudo does not let Ansible escape the
namespace-based sandbox.

Since all admins have SSH keys deployed for `root`,
this is a good alternative.

hosts

@@ -4,6 +4,10 @@ ny1.hashbang.sh
 sf1.hashbang.sh
 to1.hashbang.sh
 
+[shell_servers]
+ansible_user=root
+
+
 [coreos]
 hashbang.sh
 im.hashbang.sh