Doc(eos_designs): Dual DC example

[xaviramon]

Change Summary

Documentation to build a twin DC using DC GW as interconnection.

Example is being built using the single DC as starting point. Comprehension of first example is required to understand this example.

Related Issue(s)

Fixes #

Component(s) name

arista.avd.eos_designs

Proposed changes

Add new example documentation.

How to test

Follow the example.

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)

[JulioPDX]

Hi @xaviramon, I left some suggestions. Please let me know if you have any questions. Great PR and thank you for the contribution. Could you please add an addition to the mkdocs.yml file to have this example added?

Example:

nav:
  - Home: README.md
  - Getting Started:
      - Introduction to Ansible and AVD: docs/getting-started/intro-to-ansible-and-avd.md
      - Example for Single DC L3LS: examples/single-dc-l3ls/README.md
      - Example for Dual DC L3LS: examples/dual-dc-l3ls/README.md

Thank you!

[xaviramon]

Thanks for the comments @JulioPDX . Added them in the document.
I am unsure about the modification of contributing.md file. Is this expected from some change in the lint files?

[JulioPDX]

Thanks for the comments @JulioPDX . Added them in the document. I am unsure about the modification of contributing.md file. Is this expected from some change in the lint files?

Oddly enough, this file is not displayed in our doc site. Are these changes by pre-commit?

[ClausHolbechArista]

@xaviramon please review the last commit fa1feca

[xaviramon]

LGTM all changes + include in molecule!