Cloud SDK 355.0.0 is now available

[google-cloud-sdk-announce]

Hi all,

Cloud SDK 355.0.0 is now available for download at:
https://developers.google.com/cloud/sdk/

Release notes can be found here:
https://cloud.google.com/sdk/docs/release-notes

 ## 355.0.0 (2021-08-31)

### Anthos Identity Service

*  Promoted `gcloud container hub identity-service` to beta.

### Artifact Registry

*   Added `gcloud beta artifacts settings` for enabling/disabling/finalizing
    redirection.

### Cloud Deploy

*   Promoted `gcloud deploy` to beta.

### Cloud Pub/Sub

* Promoted `--message-retention-duration` flag of `gcloud pubsub topics create` to GA.
* Promoted `--message-retention-duration` flag of `gcloud pubsub topics update` to GA.
* Promoted `--clear-message-retention-duration` flag of `gcloud pubsub topics update` to GA.

### Compute Engine

* Promoted `skip-instances-on-validation-error` in `gcloud compute
  instance-groups managed delete-instances` to GA.
* Promoted `--image-family-scope` flag to GA for
  `gcloud compute instances create` and `gcloud compute disks create`.

### Config Connector

* Updated Google Cloud Config Connector to version 1.59.0.
  See Config Connector Overview for more details https://cloud.google.com/config-connector/docs/overview.

### GKE Hub

* Promoted the following commands to beta:
  * `gcloud container hub mesh describe`.
  * `gcloud container hub mesh disable`.
  * `gcloud container hub mesh enable`.

### Game Servers

* Added `--view=(basic|full)` arg (default to basic) to `game servers clusters get` and `game servers clusters list` commands to optionally turn off/on Agones and Kubernetes version reporting.

### Kubernetes Engine

*   Added `--security-group` flag to `gcloud container clusters create-auto` to
    allow enabling Google Groups for RBAC on Autopilot clusters at creation
    time.

*   Promoted `gpu-partition-size` field within `--accelerator` flag to enable
    partitioning of A100 GPUs to GA.

### Network Security

* Promoted `gcloud network-security server-tls-policies` to GA.


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 As always, please let us know of any issues or feedback you may have via our issue tracker: <https://issuetracker.google.com/issues/new?component=187143>. You can also ask for help on Stack Overflow, under the `gcloud` tag, or in the google-c...@googlegroups.com mailing list.