feat: Add nodepool taints to keepers for update-variant

[jinoobaek-qz]

Add node_pool_taints to force new.

[comment-bot-dev]

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[bharathkkb]

Thanks for the PR!
We need to propagate this change to all the other modules by running make build. More details here.

[github-actions]

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[bharathkkb]

/gcbrun

[bharathkkb]

I changed the logic from the initial PR based on the schema in node_config.go.

[jmymy]

FYI this forces recreation of all node pools since the random_id has a change

+/- resource "random_id" "name" {
      ~ b64_std     = "pool-01-XXX=" -> (known after apply)
      ~ b64_url     = "pool-01-XXX" -> (known after apply)
      ~ dec         = "pool-01-XXXX" -> (known after apply)
      ~ hex         = "pool-01-XXXX" -> (known after apply)
      ~ id          = "Thg" -> (known after apply)
      ~ keepers     = { # forces replacement
          + "taints"            = ""
            # (12 unchanged elements hidden)
        }
        # (2 unchanged attributes hidden)
    }

+/- resource "google_container_node_pool" "pools" {
      ~ id                  = "<REMOVED/pool-01-XXX" -> (known after apply)
      ~ instance_group_urls = [ ] -> (known after apply)
      ~ max_pods_per_node   = 110 -> (known after apply)
      ~ name                = "pool-01-XXX" -> (known after apply) # forces replacement