gnome-backups: remove cloud.gnome.org and also unset freeze flag

Per averi, cloud.gnome.org is to be removed.
This host has no impact on fedora releases and shouldn't freeze.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

roles/gnome_backups/files/backup.sh

@@ -9,7 +9,6 @@ MACHINES='signal.gnome.org
           webapps2.gnome.org
           palette.gnome.org 
           webapps.gnome.org
-          cloud.gnome.org
           bastion.gnome.org
           spinner.gnome.org
           master.gnome.org

roles/gnome_backups/files/ssh_config

@@ -1,4 +1,4 @@
-Host puppetmaster01.gnome.org cloud.gnome.org webapps3.gnome.org
+Host puppetmaster01.gnome.org webapps3.gnome.org
      User root
      IdentityFile /usr/local/etc/gnome_backup_id.rsa
      ProxyCommand ssh -W %h:%p bastion.gnome.org -F /usr/local/etc/gnome_ssh_config