Upload XML to another vPAN via PowerShell etc?

[adminicrater]

Palo Alto newbie so please excuse the nature of the question:

I would like to know if there is a way use PowerShell, Panorama and/or the CLI to distribute and configure the XML file that can be pulled down via. . .  

(Invoke-WebRequest -outfile c:\scripts\the.xml -Method POST -Uri 'https://paloalto.contoso.com/api/?type=export&category=configuration&key=xyzxyzxyzxyz....abcabc).content

Effectively, I would like to be able to stand up another firewall in the event the firewall or site were to go down.  Need be, I would like to be able to edit the XML file (perhaps programmatically or perhaps not) to change a few settings prior to pushing it to the new firewall.  We would be deploying the vPANs in Azure with ARM templates and PowerShell.

Any ideas how to get this done?  I read about bootstrapping but that seem extremely convoluted.

Does Panorama exist in Azure too? 

thank you.