upd: Support latest changes for Anyscale Operator on GCP

[brent-anyscale]

This matches latest requirements for GKE with recent changes to requirements for the Anyscale Operator.

On branch brent/gke-standard-public
Changes to be committed:
modified: README.md
modified: main.tf
modified: outputs.tf

Pull request checklist

Please check if your PR fulfills the following requirements:

• pre-commit has been run
• Tests for the changes have been added (for bug fixes / features)
• All tests passing
• Docs have been reviewed and added / updated if needed (for bug fixes / features)

Pull Request Type

• Bugfix
• New feature
• Refactoring (no functional changes)
• Documentation change
• Other (please describe):

Does this introduce a breaking change?

• Yes
• No

[brucez-anyscale]

lgtm.
nit: Shomil could double confirm if role/namespace/lb address changes are all deployed.

[brent-anyscale]

lgtm. nit: Shomil could double confirm if role/namespace/lb address changes are all deployed.

Tested on troubleshooting org (Prod) with latest CLI. I suppose I should start noting minimal cli version in the docs as well.