Feat(eos_cli_config_gen): Add support for OAM Connectivity Fault Management (CFM)

[chetryan]

Enhancement summary

Add support for the configuration of Connectivity Fault Management data model and associated config generation.

Which component of AVD is impacted

eos_cli_config_gen

Use case example

We would like to be able to define CFM profiles in the vars to be able to generate the config & documentation for said profiles through AVD. Reference to the TOI documentation :

• https://www.arista.com/en/support/toi/eos-4-27-1f/14880-ethernet-oam-connectivity-fault-management-cfm
• https://www.arista.com/en/support/toi/eos-4-28-0f/15447-delay-measurement-dm#configuration
• https://www.arista.com/en/support/toi/eos-4-29-0f/16345-ethernet-oam-performance-monitoring-function-loss-lm-and-synthetic-loss-slm-measurement#cfm-configuration

Describe the solution you would like

• New schema + data model defined
• New templates to generate the associated configuration & documentation

Describe alternatives you have considered

At the moment the only solution is to add all the configuration in eos_cli as raw eos commands. The downside is that the config appears at the bottom, instead of at the right place. It also does not get validated, risking typos/issues making it through to the switch.

Additional context

No response

Contributing Guide

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