* gke-cluster-standard: upgrade `monitoring_config` to use object style. Add tests. * gke-cluster-standard: update docs * gke-cluster-autopilot: move gateway_api_config block (cosmetic change) * gke-cluster-autopilot: update docs and fix typos * Update blueprints due to `monitoring_config` changes in `gke-cluster-standard`. * Update FAST due to `monitoring_config` changes in `gke-cluster-standard`. * Update docs for affected blueprints and FAST stages