loadbalancer attribute delete protection is required.

[luckyganesh]

What would you like to be added:
Delete protection attribute for the loadbalancer.
https://docs.aws.amazon.com/elasticloadbalancing/latest/network/network-load-balancers.html#load-balancer-attributes
deletion_protection.enabled

Why is this needed:
When I'm running the systems on production, for safety purposes I want to add delete protection loadbalancer attributes to make the loadbalancer won't get deleted by mistakenly. This is recommended by AWS.

/kind feature

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