Feat(eos_designs): Implement address_locking functionality under network_services.l2vlans[]

[alexeygorbunov]

Enhancement summary

Addition of tenants[].l2vlans.address_locking

Which component of AVD is impacted

eos_designs

Use case example

'address_locking' functionality is implemented for vlans[].address_locking (eos_cli_config_gen) but is not implemented under tenants[].l2vlans[].
When we need to control address locking on a VLAN level and that VLAN is managed by network services - we would need to define another construct for the same vlan(s) under vlans just to manage address locking functionality.
Instead - we should natively support it under tenants[].l2vlans.address_locking

Describe the solution you would like

Extend tenants[].l2vlans[] to natively support address_locking

Describe alternatives you have considered

No response

Additional context

No response

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