ci: added TGI workflow

.github/workflows/test_inf2_tgi.yml

@@ -0,0 +1,40 @@
+name: Optimum neuron / Test TGI on INF2
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - "setup.py"
+      - "optimum/**.py"
+      - "text-generation-inference/**"
+  pull_request:
+    branches: [ main ]
+    paths:
+      - "setup.py"
+      - "optimum/**.py"
+      - "text-generation-inference/**"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  do-the-job:
+    name: Run INF2 tests
+    runs-on: [self-hosted, 1-aws-inf2, 32-cpu, ci] # run the job on the newly created runner
+    env:
+      AWS_REGION: us-east-1
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Install python and create venv
+        run: |
+          sudo apt install python3.8-venv -y
+          python3 -m venv aws_neuron_venv_pytorch
+          source aws_neuron_venv_pytorch/bin/activate
+          python -m pip install -U pip
+          python -m pip config set global.extra-index-url https://pip.repos.neuron.amazonaws.com
+      - name: Run tests
+        run: |
+          source aws_neuron_venv_pytorch/bin/activate
+          HF_TOKEN=${{ secrets.HF_TOKEN_OPTIMUM_NEURON_CI }} make tgi_test