Refactor slurmrestd attributes when querying #1225

I noticed there were some weird things occurring with certain attributes when you query with slurmrestd. Many important attributes were not showing up when the user sets them in the config. When the attributes do not show up, the formatting was off and the specific attribute information seems to shift visually when querying. This seems to only be a problem for slurmrestd, but I am looking out for any related problems with the other schedulers.

This example occurred when I set these attributes in the config: allocating_node,cluster,start_time,command,job_state,accrue_time (exact order). Note: task_name and task_state always appear regardless of what the user sets.