Refactor ML-Ops and Lambda (#149)
* refactor ML Ops to multiple workflows
* rewrite ML Ops in native HCL, wrapped in `jsonencode()`
* terraform fmt compliance for 0.14.0
* glue version fix
* rename 'batch_transform'->'batch_scoring'
* skip ecr push if using builtin sagemaker model
* pip and python fixes
* improved lambda and step function execution
* bump to terraform 0.14.2
* revert to upstream 'terraform-aws-key-pair' repo
* fix interpolation warnings
Co-authored-by: Mark Stein <mark.stein@slalom.com>
Co-authored-by: mystycs <mystycs@gmail.com>
Co-authored-by: jacksandom <jack.sandom@slalom.com>
