Doc(eos_cli_config_gen): Deprecate old keys under gNMI

[ClausHolbechArista]

Change Summary

Deprecate old keys under gNMI

Component(s) name

arista.avd.eos_cli_config_gen

Proposed changes

• deprecate keys "enable_vrfs" and "octa" in favor of new data models previously inplemented.
• Update docs to be consistent in writing gnmi with mixed case: "gNMI"
• Update molecule scenarios

How to test

• Updated existing molecule scenario using the deprecated keys to instead use the new keys. No config change (except reordering)

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)

[pvinci-arista]

Do we need to create/update a porting-guide-5.x.x, or can it be caught from the schema data alone?

[ClausHolbechArista]

Do we need to create/update a porting-guide-5.x.x, or can it be caught from the schema data alone?

These deprecations will not affect the result of existing projects, but are just warnings about future removals. So I don't think they have to go into the porting guide.

[carlbuchmann]

LGTM

[carl-baillargeon]

LGTM