tweak the slurm.conf template to remove duplicate node entires if a node exists in multiple partitions

a new slurm role. Slurm communicates on the default interface currently, need to alter slurm.conf.j2 to use the VPN interface

This reverts commit 2eb17b20.

Conflicts:

	roles/nfs-server/templates/exports.j2

a new slurm role. Slurm communicates on the default interface currently, need to alter slurm.conf.j2 to use the VPN interface

make OpenVPN-Client and Server work for me, depending on easy-rsa-certifate to create appropriate certs