We should resume from last.ckpt by default

[roedoejet]

finetune_ckpt should be equal to ./logs_and_checkpoints/<experiment>/<version>/checkpoints/last.ckpt by default

[marctessier]

Thank you Aidan!

For now I will always add below for example in config/everyvoice-text-to-spec.yaml on large jobs when running on GPSC7.

finetune_checkpoint: ../logs_and_checkpoints/FeaturePredictionExperiment/base/checkpoints/last.ckpt

It will help survive 1 "PREEMPTION" and not restart from scratch.

[marctessier]

This is related to #228