Use MLflow as logging system

[mariamedp]

MLflow is becoming the most common model management library. Enabling it by default in the template is a requirement as the new AML SDK version will rely on it more heavily.

Changes needed:

• Change AML run.log() methods by mlflow equivalent.
• Use mlflow to log models as well.
• Add examples on how to log images in experiment.

Instructions in AML docs: https://docs.microsoft.com/azure/machine-learning/how-to-use-mlflow

[abhi-rf]

Hello! I am new to contributing and I would like to give this issue a try! @mariamedp

[mariamedp]

Hi @abhi-rf, that'd be great, thank you!
I'm currently working on issue #27 that will introduce some modifications to the training scripts, can you give me a few hours to commit the changes before you start working on this?
Meanwhile you can start by setting up your pipelines for testing (instructions), if you haven't done it already.

[mariamedp]

Hi again @abhi-rf, this is the PR: #57. It's pending review & approval by my colleagues, but you can have a sneak peak of the changes by looking at that branch. It will be merged next week.