delay: added fixed_before_start configuration; updated all to be very_slow
delay: added fixed_before_start configuration; updated all to be very_slow

- fixed_before_start is a fixed time period equivalent to
  temperature_before_start
- Changed existing *_between_specs and *_between_iterations callbacks to
  be very_slow, as they should always run after everything else.

ep1cman/workload-automation,muendelezaji/workload-automation,bathepawan/workload-automation,bathepawan/workload-automation,jimboatarm/workload-automation,bjackman/workload-automation,jimboatarm/workload-automation,Sticklyman1936/workload-automation,setrofim/workload-automation,Sticklyman1936/workload-automation,ARM-software/workload-automation,bathepawan/workload-automation,chase-qi/workload-automation,lisatn/workload-automation,ep1cman/workload-automation,chase-qi/workload-automation,ep1cman/workload-automation,Sticklyman1936/workload-automation,bathepawan/workload-automation,lisatn/workload-automation,chase-qi/workload-automation,Sticklyman1936/workload-automation,Sticklyman1936/workload-automation,ep1cman/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,bjackman/workload-automation,muendelezaji/workload-automation,setrofim/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,jimboatarm/workload-automation,Sticklyman1936/workload-automation,ep1cman/workload-automation,jimboatarm/workload-automation,bathepawan/workload-automation,muendelezaji/workload-automation,muendelezaji/workload-automation,ARM-software/workload-automation,jimboatarm/workload-automation,setrofim/workload-automation,muendelezaji/workload-automation,ARM-software/workload-automation,jimboatarm/workload-automation,lisatn/workload-automation,ep1cman/workload-automation,bjackman/workload-automation,bathepawan/workload-automation,chase-qi/workload-automation,lisatn/workload-automation,bjackman/workload-automation,muendelezaji/workload-automation