TACACS server config error out for hosts key not defined

[MaheshGSLAB]

Issue Summary

For TACACS server model hosts key check is not implement in j2 template hence if apart from hosts key if using other keys then throws error that hosts key is not defined.

Originally posted by @Shivani-gslab #4626 (comment)

Which component(s) of AVD impacted

eos_cli_config_gen

How do you run AVD ?

Ansible CLI (with virtual-env or native python)

Steps to reproduce

Run the eos_cli_config_gen role with below input.

tacacs_servers:
  timeout: 10

Relevant log output

An exception occurred during task execution. To see the full traceback, use -vvv. The error was: jinja2.exceptions.UndefinedError: 'ansible.parsing.yaml.objects.AnsibleMapping object' has no attribute 'hosts'
fatal: [aaa -> localhost]: FAILED! => {"changed": false, "msg": "Error during plugin execution: 'ansible.parsing.yaml.objects.AnsibleMapping object' has no attribute 'hosts'"}

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