Sly wheezy updates folder name change

[apmuthu]

As usual, debian wheezy updates have been changed to a new folder name:
Wheezy Updates are in:

deb http://ftp.debian.org/debian wheezy-updates main contrib

But for apt-get update to work now, the /etc/apt/sources.list needs to be changed in PVE3 from:

deb http://ftp.debian.org/debian wheezy main contrib

# PVE packages provided by proxmox.com
deb http://download.proxmox.com/debian wheezy pve

# security updates
deb http://security.debian.org/ wheezy/updates main contrib

to

deb ftp://ftp.debian.org/debian wheezy main contrib

# PVE packages provided by proxmox.com
deb ftp://download.proxmox.com/debian wheezy pve

# security updates
deb http://security.debian.org/ wheezy/updates main contrib