always return 0 for users that run sudo before scontrol (only user root
or SlurmUser can change node state, so we'd loose information otherwise
available).

    dependencies (e.g. job 12 dependent upon job 11 AND job 11 is dependent
    upon job 12). 

    verify the slurm.conf is the same as the one it is running.  If not an
    error message is displayed.  To silence this message add NO_CONF_HASH
    to DebugFlags in your slurm.conf.

    avoid underflow error messages when slurmctld restarts while jobs are
    in completing state.

    startup or reconfiguration if many partitions have AllowGroups configured.

    option of "Alternate" (alternate partition to use for jobs submitted to 
    partitions that are currently in a state of DRAIN or INACTIVE).