Unmanaged LZ V2 client onboarding - minimum client-setup/core-landing-zone/client-landing-zone - with tier 3/4 workload customization

20231019 setup.sh script for kcc cluster delete/recreate and lz kpt apply/destroy in https://github.com/GoogleCloudPlatform/pubsec-declarative-toolkit/issues/446#issuecomment-1771365186 under https://github.com/GoogleCloudPlatform/pubsec-declarative-toolkit/blob/gh446-hub/solutions/setup.sh

## Onboard clean organization
- using obr*.indust*
- follow https://github.com/GoogleCloudPlatform/pubsec-declarative-toolkit/issues/445

## Start with base LZ (client-setup/core-landing-zone/client-landing-zone)
- https://github.com/GoogleCloudPlatform/pubsec-declarative-toolkit#quickstart
- with new publicly accessible endpoint change in https://github.com/ssc-spc-ccoe-cei/gcp-tools/commit/941d542e5024144b541136e19700b50cd8eaf895 for https://github.com/ssc-spc-ccoe-cei/gcp-tools/pull/53 in
https://github.com/ssc-spc-ccoe-cei/gcp-tools/tree/main/scripts/bootstrap#readme

- https://github.com/GoogleCloudPlatform/pubsec-declarative-toolkit/tree/main/docs/landing-zone-v2#folder-structure-per-environment-dev-preprod-prod
-