Upgrade list to upgrade proxmox 5.4 via version 6 to version 7

upgrade_Proxmox_5.4_to_7_without_CEPH.sh

proxmox upgrade from 5.4 to 7 without CEPH 

## 5to6
systemctl stop pve-ha-lrm
systemctl stop pve-ha-crm
echo "deb http://download.proxmox.com/debian/corosync-3/ stretch main" > /etc/apt/sources.list.d/corosync3.list
apt update
apt dist-upgrade --download-only
apt dist-upgrade

pvecm status

systemctl start pve-ha-lrm
systemctl start pve-ha-crm

## 6to7 
pve6to7
apt update
apt dist-upgrade

sed -i 's/buster\/updates/bullseye-security/g;s/buster/bullseye/g' /etc/apt/sources.list
echo "deb https://enterprise.proxmox.com/debian/pve bullseye pve-enterprise" > /etc/apt/sources.list.d/pve-enterprise.list

apt update
apt dist-upgrade --download-only
apt dist-upgrade
reboot