Add new resource WorkforcePool (#6719) (#12863)

* added workforce pool

* fixed bugs

* renamed the product and fixed an error message

* updated version setting

* changed to provider-beta

* updated id validator

* updated parent field

* fixed bugs

Signed-off-by: Modular Magician <magic-modules@google.com>

Signed-off-by: Modular Magician <magic-modules@google.com>

.changelog/6719.txt

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+```release-note:new-resource
+`google_iam_workforce_pool`
+```

google/resource_iam_workforce_pool_workforce_pool_id_test.go

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+package google

google/resource_iam_workforce_pool_workforce_pool_test.go

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+package google

website/docs/r/iam_workforce_pool.html.markdown

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+---
+# ----------------------------------------------------------------------------
+#
+#     ***     AUTO GENERATED CODE    ***    Type: MMv1     ***
+#
+# ----------------------------------------------------------------------------
+#
+#     This file is automatically generated by Magic Modules and manual
+#     changes will be clobbered when the file is regenerated.
+#
+#     Please read more about how to change this file in
+#     .github/CONTRIBUTING.md.
+#
+# ----------------------------------------------------------------------------
+subcategory: "Cloud IAM"
+page_title: "Google: google_iam_workforce_pool"
+description: |-
+  Represents a collection of external workforces.
+---
+
+# google\_iam\_workforce\_pool
+
+Represents a collection of external workforces. Provides namespaces for
+federated users that can be referenced in IAM policies.
+Note: Ask your Google Cloud account team to request access to workforce identity
+federation for your billing/quota project. The account team notifies you when the project is
+granted access.
+
+~> **Warning:** This resource is in beta, and should be used with the terraform-provider-google-beta provider.
+See [Provider Versions](https://terraform.io/docs/providers/google/guides/provider_versions.html) for more details on beta resources.
+
+To get more information about WorkforcePool, see:
+
+* [API documentation](https://cloud.google.com/iam/docs/reference/rest/v1/locations.workforcePools)
+* How-to Guides
+    * [Manage pools](https://cloud.google.com/iam/docs/manage-workforce-identity-pools-providers#manage_pools)
+
+## Example Usage - Iam Workforce Pool Basic
+
+
+```hcl
+resource "google_iam_workforce_pool" "example" {
+  provider = google-beta
+
+  workforce_pool_id = "example-pool"
+  parent            = "organizations/123456789"
+  location          = "global"
+}
+```
+## Example Usage - Iam Workforce Pool Full
+
+
+```hcl
+resource "google_iam_workforce_pool" "example" {
+  provider = google-beta
+
+  workforce_pool_id = "example-pool"
+  parent            = "organizations/123456789"
+  location          = "global"
+  display_name      = "Display name"
+  description       = "A sample workforce pool."
+  disabled          = false
+  session_duration  = "7200s"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+
+* `location` -
+  (Required)
+  The location for the resource.
+
+* `workforce_pool_id` -
+  (Required)
+  The name of the pool. The ID must be a globally unique string of 6 to 63 lowercase letters,
+  digits, or hyphens. It must start with a letter, and cannot have a trailing hyphen.
+  The prefix `gcp-` is reserved for use by Google, and may not be specified.
+
+* `parent` -
+  (Required)
+  Immutable. The resource name of the parent. Format: `organizations/{org-id}`.
+
+
+- - -
+
+
+* `display_name` -
+  (Optional)
+  A user-specified display name of the pool in Google Cloud Console. Cannot exceed 32 characters.
+
+* `description` -
+  (Optional)
+  A user-specified description of the pool. Cannot exceed 256 characters.
+
+* `disabled` -
+  (Optional)
+  Whether the pool is disabled. You cannot use a disabled pool to exchange tokens,
+  or use existing tokens to access resources. If the pool is re-enabled, existing tokens grant access again.
+
+* `session_duration` -
+  (Optional)
+  Duration that the Google Cloud access tokens, console sign-in sessions,
+  and `gcloud` sign-in sessions from this pool are valid.  
+  Must be greater than 15 minutes (900s) and less than 12 hours (43200s).
+  If `sessionDuration` is not configured, minted credentials have a default duration of one hour (3600s).
+  A duration in seconds with up to nine fractional digits, ending with '`s`'. Example: "`3.5s`".
+
+
+## Attributes Reference
+
+In addition to the arguments listed above, the following computed attributes are exported:
+
+* `id` - an identifier for the resource with format `locations/{{location}}/workforcePools/{{workforce_pool_id}}`
+
+* `name` -
+  Output only. The resource name of the pool.
+  Format: `locations/{location}/workforcePools/{workforcePoolId}`
+
+* `state` -
+  Output only. The state of the pool.
+   * STATE_UNSPECIFIED: State unspecified.
+   * ACTIVE: The pool is active, and may be used in Google Cloud policies.
+   * DELETED: The pool is soft-deleted. Soft-deleted pools are permanently deleted
+     after approximately 30 days. You can restore a soft-deleted pool using
+     [UndeleteWorkforcePool][WorkforcePools.UndeleteWorkforcePool].
+     You cannot reuse the ID of a soft-deleted pool until it is permanently deleted.
+     While a pool is deleted, you cannot use it to exchange tokens, or use
+     existing tokens to access resources. If the pool is undeleted, existing
+     tokens grant access again.
+
+
+## Timeouts
+
+This resource provides the following
+[Timeouts](/docs/configuration/resources.html#timeouts) configuration options:
+
+- `create` - Default is 20 minutes.
+- `update` - Default is 20 minutes.
+- `delete` - Default is 20 minutes.
+
+## Import
+
+
+WorkforcePool can be imported using any of these accepted formats:
+
+```
+$ terraform import google_iam_workforce_pool.default locations/{{location}}/workforcePools/{{workforce_pool_id}}
+$ terraform import google_iam_workforce_pool.default {{location}}/{{workforce_pool_id}}
+```