Feat(eos_cli_config_gen): Add support for tunnel-interface underlay vrf

[nathanmusser]

Change Summary

Add support for setting underlay vrf for a tunnel-interface

Related Issue(s)

Fixes #4165

Component(s) name

arista.avd.eos_cli_config_gen

Proposed changes

Added underlay_vrf as a key to the tunnel-interfaces model. Setting this value will generate the following CLI config:

interface <tunnel_name>
   tunnel underlay vrf <vrf_name>

How to test

Checklist

User Checklist

• N/A

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]

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To test this pull request:

# Create virtual environment for this testing below the current directory
python -m venv test-avd-pr-4211
# Activate the virtual environment
source test-avd-pr-4211/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/nathanmusser/avd.git@tunnel-underlay-vrf#subdirectory=python-avd" --force
# Install Ansible collection
ansible-galaxy collection install git+https://github.com/nathanmusser/avd.git#/ansible_collections/arista/avd/,tunnel-underlay-vrf --force
# Optional: Install AVD examples
cd test-avd-pr-4211
ansible-playbook arista.avd.install_examples

[gmuloc]

LGTM - thanks for adding this

pf1(config-if-Tu42)#show cli command | grep 'tunnel underlay'
[no|default] tunnel underlay ( VRF_VRF_KW ( VRF_VRF_DYNAMIC ) )
pf1(config-if-Tu42)#tunnel underlay vrf ?
  WORD  VRF name