Import internal unit tests, first crack at unit test ci definition, c…

…ipher override support, gitignore

.github/workflows/ci.yml

@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - '*'
+      - '!main'
+
+env:
+  RUN: ${{ github.run_id }}-${{ github.run_number }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  PACKAGE_NAME: aws-iot-device-sdk-python
+  AWS_EC2_METADATA_DISABLED: true
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Unit tests
+        run: |
+          python3 setup.py install
+          pip install pytest
+          pip install mock
+          python3 -m pytest test
+