New Key Vault opt to only allow certain IPs

[jsloan117]

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Description

Add the ability to restrict access to the key vault packer spins up by IP_Rules.

Use Case(s)

In my ENV we have policies that basically say don't allow "the world" access to KVTs. We have to use a predefined KVT for now, since packer wants to allow access to openly by default.

Potential configuration

A new config opt

build_key_vault_allowed_inbound_ip_addresses

Potential References