Feat(eos_cli_config_gen): Add ICMP echo size for Monitor Connectivity hosts

[ctyrider]

Change Summary

Add support for "icmp echo size ..." CLI syntax, under Monitor Connectivity hosts:

monitor connectivity
   host <HOST-NAME>
      icmp echo size <36-18024>
   vrf <VRF-NAME>
      host <HOST-NAME>
         icmp echo size <36-18024>

Related Issue(s)

Fixes #4848

Component(s) name

arista.avd.eos_cli_config_gen

Proposed changes

New icmp_echo_size variable in eos_cli_config_gen:

monitor_connectivity:
  hosts:
     - name: <str; required; unique>
       icmp_echo_size: <int>
  vrfs:
     - name: <str; required; unique>
	   hosts:
             - name: <str; required; unique>
               icmp_echo_size: <int>

How to test

Molecule test pending

Checklist

User Checklist

• N/A

Repository Checklist

• [x ] 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-4853
# Activate the virtual environment
source test-avd-pr-4853/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/ctyrider/avd.git@issue4848#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/ctyrider/avd.git#/ansible_collections/arista/avd/,issue4848 --force
# Optional: Install AVD examples
cd test-avd-pr-4853
ansible-playbook arista.avd.install_examples

[ctyrider]

Ready to merge

[gmuloc]

thanks a lot for this PR - couple of comments