Node ActiveFeature work

sinfo to group by like ActiveFeatures
sinfo long format option for ActiveFeatures
slurm.conf parse to accept node "Features" as well as current "Feature"
scontrol to report AcitveFeatures and AvailableFeatures on separate lines
If a user sets node available features and the specification includes "knl"
  then expand that to include all possible NUMA and MCDRAM modes, the same
  as if "knl" is specified in slurm.conf
Confirm that when AcitveFeatures is set, it is a subset of the
  AvailableFeatures