Cloud SDK 304.0.0 is now available

[Hannah (Chani) Dubin]

Hi all,

Cloud SDK 304.0.0 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

Cloud SDK introduced support for Python 3 in release 274.0.0 and users are strongly encouraged to migrate to Python 3. Support for Python 2 will be deprecated on September 30, 2020. See also https://cloud.google.com/python/docs/python2-sunset/ and https://cloud.google.com/sdk/gcloud/reference/topic/startup.

 ## 304.0.0 (2020-08-04)

### Cloud Build

* Modifed the command group `gcloud beta builds worker-pools` such that all underlying commands now use a regional Cloud Build API endpoint (instead of the global one).
* Modifed the command group `gcloud builds` such that all underlying commands may optionally use a regional Cloud Build API endpoint (instead of the global one). This is controlled by the new flag `--region`, as well as the configuration of submitted builds.

### Cloud Composer

* Fixed a bug where an argument added to `backfill` subcommand of
`gcloud composer environments run` fails in older Airflow versions.
* Added `--web-server-machine-type` flag to `gcloud beta composer environments`
commands to specify the machine type used by the Airflow web server.

### Cloud IAM

* Promoted  `gcloud iam service-accounts keys upload` to GA.

### Compute Engine

* Added `gcloud beta compute os-config os-upgrade` to enable major OS version updates on support distributions.
* Promoted `gcloud compute diagnose export-logs` to GA.

### Firebase Test Lab

*   Added the command `gcloud [alpha|beta] firebase test ip-blocks list`, which
    retrieves a catalog of IP blocks used by Firebase Test Lab devices.

### Kubernetes Engine

* Added `--node-group` to `gcloud container node-pools create`. This flag is used to enable the Compute Engine sole tenant node feature on Kubernetes Engine node pools.

### Secret Manager

* Updated the following commands to better support IAM Conditions:
  * `gcloud secrets get-iam-policy` outputs conditions associated with each binding.
  * `gcloud secrets set-iam-policy` accepts policies with conditional bindings.
  * `gcloud secrets <add|remove>-iam-policy-binding` accepts conditional bindings.


Subscribe to these release notes at [https://groups.google.com/forum/#!forum/google-cloud-sdk-announce](https://groups.google.com/forum/#!forum/google-cloud-sdk-announce).

Note: Cloud SDK introduced support for Python 3 in release 274.0.0 and users are strongly encouraged to migrate to Python 3. Support for Python 2 will be deprecated on September 30, 2020. See also [Python 2 Sunset](https://cloud.google.com/python/docs/python2-sunset/) and [Using Python 3](https://cloud.google.com/sdk/gcloud/reference/topic/startup).
 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.