Cloud SDK 346.0.0 is now available

[google-cloud-sdk-announce]

Hi all,

Cloud SDK 346.0.0 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

 ## 346.0.0 (2021-06-22)

### Breaking Changes

*   **(Cloud SDK)** Removed the deprecated flag `--add-quota-project` in `gcloud auth
  application-default login`. `--add-quota-project` is the default.
*   **(Certificate Authority Service)** Renamed `--location` flag on `gcloud privateca certificates create` as
  `--template-location`, and updated it to default to the same location as
  the issuing CA Pool.
*   **(Certificate Authority Service)** Added an explicit check to `gcloud privateca certificates create` to verify
  that any certificate templates are in the same location as the issuing CA
  Pool.


### AI

* Added `gcloud beta ai custom-jobs local-run` which creates a custom training container image from your code and runs it locally.
* Supported training with local files in `gcloud beta custom-job create` command.

### Access Approval

*  Promoted `gcloud access-appoval` command group to beta.

### Cloud Asset Inventory

*   Updated `gcloud asset search-all-iam-policies` with new searchable fields
    (`memberTypes`, `roles`, `project`, `folders`, and `organizations`), new
    request fields (`assetTypes` and `orderBy`), and new response fields
    (`assetType`, `folders`, and `organization`).

### Cloud Build

* Updated `gcloud builds triggers create ...` with `require-approval` flag.

### Cloud Composer

* Added `gcloud beta composer environments check-upgrade` command. It checks that an environment upgrade does not fail because of PyPI module conflicts.

### Cloud DNS

* Added `--gkeclusters` to `gcloud beta dns managed-zones create` to support binding GKE clusters to the zone.

### Cloud Datastream

* Added `gcloud beta operations cancel` which
  cancels a datastream operation.
* Added `gcloud beta private-connections create` which
  creates a datastream private connection.

### Cloud Pub/Sub

* Promoted `gcloud pubsub schemas` to GA.
* Promoted `--schema` and `--encoding` flags of `gcloud pubsub topics create` to GA.

### Cloud SQL

*   Added SQL Server 2019 options to `--database-version` flag of
    `gcloud sql instances create` and `gcloud sql flags list`.

### Compute Engine

* Added debian-10 option to `--os` flag for:
  * `gcloud compute images import` in GA,
  * `gcloud compute instances import` in GA
  * `gcloud compute machine-images import` in beta
  * `gcloud compute routers update`
* Promoted support for `stack-type` and `ipv6-network-tier` for `gcloud compute instances network-interfaces update` to GA.
* Added staged progress tracker to `gcloud beta compute networks update --switch-to-custom-subnet-mode` when updating a legacy network.

### Config Connector

* Updated Google Cloud Config Connector to version 1.53.0.
  See Config Connector Overview for more details https://cloud.google.com/config-connector/docs/overview.

### Kpt

* Updated kpt from v0.39.2 to v0.39.3.

### Miscellaneous

* Updated lazy module loader to correctly set module.__file__ to the file name,
  rather than the file handle, to properly support debugging with Pdb++
  (https://issuetracker.google.com/issues/190741410).

### VPC Access

* Promoted following flags in `gcloud compute networks vpc-access connectors create` to GA:
  * `--machine-type`


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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.