Feat(eos_cli_config_gen) Add support for ip name-server group

[chussain-arista]

Enhancement summary

There is no input variable for applying the ip name-server group to monitor connectivity via eos_cli_config_gen. Below contains the use cause example, refer to the text in bold.

Which component of AVD is impacted

eos_cli_config_gen

Use case example

ip name-server group {name_server_group}
name-server vrf {name_server_vrf} {IP}

monitor connectivity
vrf {name_server_vrf}
interface set {set_name} {loopback_name}
description {description}
!
host {host_name}
url {url}
name-server group {name_server_group}

Describe the solution you would like

Please create a key (input variable) for the name-server group association with other objects (e.g. monitor connectivity). If there is already a key value, then look to add capability for monitor connectivity.

Describe alternatives you have considered

Customer is currently using eos_cli to render the data into the configuration.

Additional context

No response

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