Improves route control script (#710)

* Initial modifications

* General improvements of route_control.py script
Breaks it into classes
Adds type hints and docstrings
Adds error handling
Adds logging

* Removes comments

* Adds initial unit tests

* Adding more tests

* Fixes styling and adds new tests
Adds new test cases
Fixes lint and static issues

* Adds github workflow file

* Addresses review comments
Renames constants
Small changes in the design
Extracts arg parsing

* Adds new test cases

* Addresses review comments
Moves and renames constatns

* Updates unit tests to follow latest changes

* Improves logging

* Addresses review comments
Makes some variables private
Fixes typo in py-workflow.yml

* Adds licensing

* Minor fixes
Fixes test location in workflow file
Fixes licensing

* Uses correct path to import and patch route_control

* Addresses review comments
Fixes mac_to_hex function
Removes unnecessary int conversion

* Addresses review comments, fixes tests
Removes patches of private functions
Uses MAX_GATES-1 as gate index for default routes

* Fixes gate_idx computation when adding a new neighbor

---------

Co-authored-by: gab-arrobo <gabriel.arrobo@intel.com>

.github/workflows/py-workflow.yml

@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2023 Canonical Ltd.
+
+name: Python Lint and Test
+
+on: [push, pull_request]
+
+jobs:
+  route-control-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.11'
+
+    - name: Create virtual environment
+      run: python -m venv venv
+
+    - name: Install dependencies
+      run: |
+        source ./venv/bin/activate
+        pip install -r ./conf/test-requirements.txt
+
+    - name: Run tests
+      run: |
+        source ./venv/bin/activate
+        python -m unittest ./conf/test_route_control.py

.gitignore

@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 # Copyright 2019 Intel Corporation
+# Copyright 2023 Canonical Ltd.
+
 .idea/
 .coverage/
 *.pyc
@@ -8,3 +10,4 @@ output
 dpdk-devbind.py
 dpdk-hugepages.py
 dictionary.dic
+venv/