providers/google: add google_container_versions data source.

Add a data source for listing available versions for Container Engine
clusters or retrieving the latest available version.

This is mostly to support our tests for specifying a version for cluster
creation; the withVersion test has been updated to use the data source,
meaning it will stop failing on us as new versions get released.
This commit is contained in:
Paddy 2017-05-08 00:38:11 -07:00
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---
layout: "google"
page_title: "Google: google_container_versions"
sidebar_current: "docs-google-datasource-container-versions"
description: |-
Provides lists of available Google Container versions for masters and nodes.
---
# google\_container\_versions
Provides access to available Google Container versions in a zone for a given project.
```hcl
data "google_container_versions" "central1b" {
zone = "us-central1-b"
}
resource "google_container_cluster" "foo" {
name = "terraform-test-cluster"
zone = "us-central1-b"
node_version = "${data.google_container_versions.central1b.latest_node_version}"
initial_node_count = 1
master_auth {
username = "mr.yoda"
password = "adoy.rm"
}
}
```
## Argument Reference
The following arguments are supported:
* `zone` (required) - Zone to list available cluster versions for. Should match the zone the cluster will be deployed in.
* `project` (optional) - ID of the project to list available cluster versions for. Should match the project the cluster will be deployed to.
Defaults to the project that the provider is authenticated with.
## Attributes Reference
The following attributes are exported:
* `valid_master_versions` - A list of versions available in the given zone for use with master instances.
* `valid_node_versions` - A list of versions available in the given zone for use with node instances.
* `latest_master_version` - The latest version available in the given zone for use with master instances.
* `latest_node_version` - The latest version available in the given zone for use with node instances.