Add BFD for OSPF

[titom73]

Change Summary

Types of changes

• New feature (non-breaking change which adds functionality)

Related Issue(s)

Fixes #55

Component(s) name

Roles:

• eos_l3ls_evpn
• eos_cli_config_gen

Proposed changes

eos_l3ls_evpn

# Underlay OSFP | Required when < underlay_routing_protocol > == OSPF
underlay_ospf_process_id: < process_id | Default -> 100 >
underlay_ospf_area: < ospf_area | Default -> 0.0.0.0 >
underlay_ospf_max_lsa: < lsa | Default -> 12000 >
underlay_ospf_bfd_enable: < true | false | Default -> false >

eos_cli_config_gen

router_ospf:
  process_ids:
    100:
      passive_interface_default: true
      router_id: 192.168.255.7
      no_passive_interfaces:
        - Ethernet1
        - Ethernet2
      bfd_enable: true
      max_lsa: 12000

How to test

Iterate one of these data

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have updated molecule CI testing accordingly
• I have read the CONTRIBUTING document.
• All new and existing tests passed (pre-commit, make linting and make sanity-lint).

[carlbuchmann]

LGTM, tested successfully with avd-validation lab.