Refactor(eos_cli_config_gen, eos_designs): Improve BGP VRF Address Families Model

[emilarista]

Change Summary

• Adds new and better data model for address family configuration under router bgp vrfs.
  • ipv4
  • ipv4 multicast
  • ipv6
  • ipv6 multicast
  • flow-spec ipv4
  • flow-spec ipv6
• Refactor eos_designs to use the new model.
• Adds deprecation warnings for the old data model.
• Update molecule scenarios.

Related Issue(s)

Fixes #1323

Component(s) name

arista.avd.eos_cli_config_gen
arista.avd.eos_designs

Proposed changes

    router_bgp:
      vrfs:
        - name: <str>
          ...
          address_family_ipv4:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
              additional_paths:
                install: <bool>
                install_ecmp_primary: <bool>
                receive: <bool>
                send:
                  any: <bool>
                  backup: <bool>
                  ecmp: <bool>
                  ecmp_limit: <int>
                  limit: <int>
            neighbors:
              - ip_address: <str>
                activate: <bool>
                route_map_in: <str>
                route_map_out: <str>
            peer_groups:
              - name: <str>
                activate: <bool>
                next_hop:
                  address_family_ipv6:
                    enabled: <bool>
                    originate: <bool>
            networks:
              - prefix: <str>
                route_map: <str>
          address_family_ipv6:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
              additional_paths:
                install: <bool>
                install_ecmp_primary: <bool>
                receive: <bool>
                send:
                  any: <bool>
                  backup: <bool>
                  ecmp: <bool>
                  ecmp_limit: <int>
                  limit: <int>
            neighbors:
              - ip_address: <str>
                activate: <bool>
                route_map_in: <str>
                route_map_out: <str>
            peer_groups:
              - name: <str>
                activate: <bool>
            networks:
              - prefix: <str>
                route_map: <str>
          address_family_ipv4_multicast:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
              additional_paths:
                receive: <bool>
            neighbors:
              - ip_address: <str>
                activate: <bool>
                route_map_in: <str>
                route_map_out: <str>
            peer_groups:
              - name: <str>
                activate: <bool>
            networks:
              - prefix: <str>
                route_map: <str>
          address_family_ipv6_multicast:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
              additional_paths:
                receive: <bool>
            neighbors:
              - ip_address: <str>
                activate: <bool>
                route_map_in: <str>
                route_map_out: <str>
            peer_groups:
              - name: <str>
                activate: <bool>
            networks:
              - prefix: <str>
                route_map: <str>
          address_family_flow_spec_ipv4:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
            neighbors:
              - ip_address: <str>
                activate: <bool>
          address_family_flow_spec_ipv6:
            bgp:
              missing_policy:
                direction_in_action: <str>
                direction_out_action: <str>
            neighbors:
              - ip_address: <str>
                activate: <bool>

How to test

Tested with molecule to make sure identical config is rendered.

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]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[github-actions]

Conflicts have been resolved. A maintainer will review the pull request shortly.

[carlbuchmann]

LGTM