[BUG] List of inputs where id needs to validated and forced to avoid state issues

[fernando-villalba]

Description

There are multiple fields where we need to validate to ensure that id is used as allowing using the name causes issues with state, issues that could lead to accidental destruction of resources.

Acceptance Criteria

Here is a non-exhaustive list of fields where we need to ensure that we only accept ids:

civo_instance

• firewall_id
• network_id
• reserved_ipv4
• sshkey_id
• disk_image --> I believe this one is done already

kubernetes_instance

• firewall_id
• network_id

civo_firewall

• network_id

There could be more I am missing but these are very important that we ensure the user can only provide ids to avoid issues, this is a high priority issue.