Feat(anta_runner): Add VTEP routing table tests

[carl-baillargeon]

Change Summary

Add VerifyRoutingTableEntry test to anta_runner.

Related Issue(s)

Fixes #5980

Component(s) name

arista.avd.anta_runner

Proposed changes

On VTEP devices (excluding WAN routers), generates inputs to verify IPv4 routing table entries of other fabric device Loopback0 and VTEP IPs in the underlay. Only IPv4 (not IPv6) underlays are supported.

Test is skipped if vtep_fabric_reachability is disabled, which is the default behavior since this test could generate a LOT of inputs.

How to test

TBD

Checklist

User Checklist

• Add the Ansible part

Repository Checklist

• My code has been rebased from devel before I start
• I have read the CONTRIBUTING document.
• My change requires a change to the documentation and documentation have been updated accordingly.
• I have updated molecule CI testing accordingly. (check the box if not applicable)

[github-actions]

Review docs on Read the Docs

To test this pull request:

# Create virtual environment for this testing below the current directory
python -m venv test-avd-pr-6043
# Activate the virtual environment
source test-avd-pr-6043/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/carl-baillargeon/avd.git@anta/add_routing_tests#subdirectory=python-avd" --force
# Point Ansible collections path to the Python virtual environment
export ANSIBLE_COLLECTIONS_PATH=$VIRTUAL_ENV/ansible_collections
# Install Ansible collection
ansible-galaxy collection install git+https://github.com/carl-baillargeon/avd.git#/ansible_collections/arista/avd/,anta/add_routing_tests --force
# Optional: Install AVD examples
cd test-avd-pr-6043
ansible-playbook arista.avd.install_examples

[sonarqubecloud]

Quality Gate failed

Failed conditions
50.8% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud