Fix OpenFL MICCAI tutorials

[psfoley]

At least two OpenFL tutorials from MICCAI 2022 are failing:

1. 2D MedMNIST - https://github.com/intel/fl-tutorial/blob/gh-pages/tutorial_notebooks/Tutorial_1_Medmnist_2D.ipynb
2. OpenFL GaNDLF tutorial - https://github.com/intel/fl-tutorial/blob/gh-pages/tutorial_notebooks/Tutorial_3_GaNDLF_OpenFL_tutorial.ipynb

Steps to reproduce:

1. Go to either of the above links and click the Open in Colab link
2. Run all cells

[kta-intel]

Investigating on 2D MedMNIST

Seems to be an incompatibility with Google Colab and OpenFL v1.4. Colab currently uses Python v3.9.16 whereas the version of OpenFL installed in the miccai_fl_tutorial branch specifies Python <3.9.

Installing from the latest branch or binary (pip install openfl) seems to resolve this error. For some reason, I still end up with an import error:

ImportError: cannot import name 'builder' from 'google.protobuf.internal' (/usr/local/lib/python3.9/dist-packages/google/protobuf/internal/__init__.py)

Here is a workaround (bandage) for that:

!pip install --upgrade protobuf
!cp /usr/local/lib/python3.9/dist-packages/google/protobuf/internal/builder.py .
!pip install protobuf==3.19.6
!mv builder.py /usr/local/lib/python3.9/dist-packages/google/protobuf/internal/

Worth it to note that this issue looks to be unique to Google Colab. I didn't not run into this issue using Intel's Developer Cloud or a standard local notebook

---

Edit: the import error is being caused by incompatible protobuf requirements between Tensorflow 2.12 and OpenFL v1.5. OpenFL requires protobuf==3.19.6 whereas TF 2.12 requires protobuf!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5,<5.0.0dev,>=3.20.

[bjklemme-intel]

"OpenFL_Team1 is working on this"

[teoparvanov]

Closing this issue as the Interactive API is being deprecated in favor of Workflow API, and the MICCAI tutorials repo is being archived. Please reopen if the priorities change.