Extract formating procedures for time and nodes to functions
The ReFrame high level API does not support for SLURM
- setting the time string in 2 digit format for minutes and seconds (d-HH:MM:SS), and
- setting the number of nodes (inferred from number of tasks).
Some procedures are implemented in tests to perform these tasks with the low level API (job.options
list). Mode this procedures to functions in a library.