Feat(eos_designs): support type 8a bgp passwords

[pvinci-arista]

Enhancement summary

When

management security
   password encryption reversible aes-256-gcm

is configured, type 8a passwords are shown in the configuration. AVD always specifies the type 7 password

bgp_peer_groups:
  ipv4_underlay_peers:

    # Name of peer group.
    name: <str; default="IPv4-UNDERLAY-PEERS">

    # Type 7 encrypted password.
    password: <str>

Which component of AVD is impacted

eos_designs

Use case example

please detail your use case

Describe the solution you would like

The feature requested is to change the password type to 8a when password encryption reversible aes-256-gcm is set. In the alternative, set an additional key specifying the password_type under the peer_group.

Describe alternatives you have considered

We used a python script to update the setting, basically doing a:

eos_cli = eos_cli.replace("password 7", "password 8a")

Additional context

No response

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[ClausHolbechArista]

We have investigated this, and we cannot implement this support in AVD. Unicast me for details.

[ClausHolbechArista]

Hmm maybe I reacted to quickly. If this is only asking for the password type to be 8a we could do it, but it would require you to encrypt the password on a box and put the encrypted string into the AVD inputs. What we would not support is allowing the arista.avd.password filter to encrypt passwords with 8a.

Implementing this support would also mean we need to enforce

management security
   password encryption reversible aes-256-gcm

somehow.