Feat(eos_cli_config_gen): Add support for spanning_tree_bpduguard 'rate-limit count' under ethernet_interfaces

[szurc]

Enhancement summary

Add support for configuring the rate-limit count under the spanning_tree_bpduguard knob in ethernet_interface. Currently this option is not available in that knob.

Which component of AVD is impacted

eos_cli_config_gen

Use case example

Currently the bpduguard config is limited to:

interface Ethernet53/1
   spanning-tree bpduguard enable

interface Port-Channel531
     spanning-tree bpduguard enable

I would need the additional rate-limit count option

interface Ethernet53/1
   spanning-tree bpduguard rate-limit count 10000

interface Port-Channel531
   spanning-tree bpduguard rate-limit count 10000

Describe the solution you would like

New key under Ethernet interfaces and Port-channel interfaces.
Something like

spanning_tree_bpduguard_rate-limit_count : <int>

Describe alternatives you have considered

eos_cli does the job but it's messy.

raw_eos_cli: "spanning-tree bpdu-guard rate-limit count 10000"

port_channel:
   raw_eos_cli: "spanning-tree bpdu-guard rate-limit count 10000"

Additional context

No response

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