Chocolatey/R installation on Windows VMs

[kfaerk]

When running e.g. R in Azure Batch, R needs to be installed as an application package and linked to the nodes or tasks that require it. This is annoying and requires a manual step of adding the R-application through the Azure Portal.

It should be possible to install e.g. Chocolatey (https://chocolatey.org/) through the command line as a part of the node start up task, and then through that install R (https://chocolatey.org/packages/R.Project).
This would require no user intervention and make the whole process much easier for the user.