lurmctld load job made into three functions (job/step/details) Jette

Slurmctld add node list to job step (leave bitmap too, faster)	Jette
Slurmctld fix node state when job keeps running and node fails	Jette
Slurmctld job requests with min-max resource requirement pair	Jette
Slurmctld job requests with excluded node list (--exclude)	Jette