MM transformer training and serving example (#1045)

Add inference to the next item prediction example (session-based)

* extend example
* align unit test
* add merlin-systems to envs

---------

Co-authored-by: Karl Higley <[email protected]>
Co-authored-by: Benedikt Schifferer <[email protected]>

Author: 3 people

.github/workflows/tensorflow.yml

@@ -47,12 +47,14 @@ jobs:
           fi
           pip install "pandas>=1.2.0,<1.4.0dev0"
           pip install "NVTabular@git+https://github.com/NVIDIA-Merlin/NVTabular.git@$branch"
-          pip install "merlin-dataloader@git+https://github.com/NVIDIA-Merlin/dataloader.git@$branch"          
+          pip install "merlin-dataloader@git+https://github.com/NVIDIA-Merlin/dataloader.git@$branch"
           pip install "merlin-core@git+https://github.com/NVIDIA-Merlin/core.git@$branch"
+          pip install "merlin-systems@git+https://github.com/NVIDIA-Merlin/systems.git@$branch"
       - name: Install dependencies
         run: |
           python -m pip install "tensorflow${{ matrix.tensorflow-version }}"
-          python -m pip install .[tensorflow-dev]          
+          python -m pip install .[tensorflow-dev]
+          pip install tritonclient[all]
       - name: Build
         run: |
           python setup.py develop
@@ -102,12 +104,14 @@ jobs:
           fi
           pip install "pandas>=1.2.0,<1.4.0dev0"
           pip install "NVTabular@git+https://github.com/NVIDIA-Merlin/NVTabular.git@$branch"
-          pip install "merlin-dataloader@git+https://github.com/NVIDIA-Merlin/dataloader.git@$branch"          
+          pip install "merlin-dataloader@git+https://github.com/NVIDIA-Merlin/dataloader.git@$branch"
           pip install "merlin-core@git+https://github.com/NVIDIA-Merlin/core.git@$branch"
+          pip install "merlin-systems@git+https://github.com/NVIDIA-Merlin/systems.git@$branch"
       - name: Install dependencies
         run: |
           python -m pip install "tensorflow${{ matrix.tensorflow-version }}"
-          python -m pip install .[tensorflow-dev]          
+          python -m pip install .[tensorflow-dev]
+          pip install tritonclient[all]
       - name: Build
         run: |
           python setup.py develop