Juniper-ELS Stack **Up/Downgrade**

Working Juniper upgrade/downgrade firmware template. This template is only for ELS versions of Junos but can be modified easily for non-ELS versions of Junos.  This template does the following.

1. Creates individual helpful preupgrade information in case troubleshooting is necessary post-upgrade

2. Archives those files and copies them to a SCP server

3. Downloads the install file, with the {SubFolder} macro for multiple installs, to the /var/tmp/ folder

4. Runs install and reboots.