PAM module to authenticate using the Slurm resource manager

 The Slurm Workload Manager is an open-source cluster resource management and
 job scheduling system that strives to be simple, scalable, portable,
 fault-tolerant, and interconnect agnostic.
 Pluggable Authentication Module (PAM) for restricting access to compute
 nodes where Slurm performs resource management. Access to the node is
 restricted to user root and users who have been allocated resources on
 that node.