Artifact Registry: Implement cleanup policies (#8671) (#15561)

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

.changelog/8671.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+artifactregistry: added `cleanup_policies` and `cleanup_policy_dry_run` fields to resource `google_artifact_registry_repository`
+```

website/docs/r/artifact_registry_repository.html.markdown

@@ -147,6 +147,50 @@ resource "google_artifact_registry_repository" "my-repo" {
   }
 }
 ```
+<div class = "oics-button" style="float: right; margin: 0 0 -15px">
+  <a href="https://console.cloud.google.com/cloudshell/open?cloudshell_git_repo=https%3A%2F%2Fgit.luolix.top%2Fterraform-google-modules%2Fdocs-examples.git&cloudshell_working_dir=artifact_registry_repository_cleanup&cloudshell_image=gcr.io%2Fgraphite-cloud-shell-images%2Fterraform%3Alatest&open_in_editor=main.tf&cloudshell_print=.%2Fmotd&cloudshell_tutorial=.%2Ftutorial.md" target="_blank">
+    <img alt="Open in Cloud Shell" src="//gstatic.com/cloudssh/images/open-btn.svg" style="max-height: 44px; margin: 32px auto; max-width: 100%;">
+  </a>
+</div>
+## Example Usage - Artifact Registry Repository Cleanup
+
+
+```hcl
+resource "google_artifact_registry_repository" "my-repo" {
+  provider      = google-beta
+  location      = "us-central1"
+  repository_id = "my-repository"
+  description   = "example docker repository with cleanup policies"
+  format        = "DOCKER"
+  cleanup_policy_dry_run = false
+  cleanup_policies {
+    id     = "delete-prerelease"
+    action = "DELETE"
+    condition {
+      tag_state    = "TAGGED"
+      tag_prefixes = ["alpha", "v0"]
+      older_than   = "2592000s"
+    }
+  }
+  cleanup_policies {
+    id     = "keep-tagged-release"
+    action = "KEEP"
+    condition {
+      tag_state             = "TAGGED"
+      tag_prefixes          = ["release"]
+      package_name_prefixes = ["webapp", "mobile"]
+    }
+  }
+  cleanup_policies {
+    id     = "keep-minimum-versions"
+    action = "KEEP"
+    most_recent_versions {
+      package_name_prefixes = ["webapp", "mobile", "sandbox"]
+      keep_count            = 5
+    }
+  }
+}
+```
 
 ## Argument Reference
 
@@ -215,11 +259,24 @@ The following arguments are supported:
   Configuration specific for a Virtual Repository.
   Structure is [documented below](#nested_virtual_repository_config).
 
+* `cleanup_policies` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Cleanup policies for this repository. Cleanup policies indicate when
+  certain package versions can be automatically deleted.
+  Map keys are policy IDs supplied by users during policy creation. They must
+  unique within a repository and be under 128 characters in length.
+  Structure is [documented below](#nested_cleanup_policies).
+
 * `remote_repository_config` -
   (Optional)
   Configuration specific for a Remote Repository.
   Structure is [documented below](#nested_remote_repository_config).
 
+* `cleanup_policy_dry_run` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  If true, the cleanup pipeline is prevented from deleting versions in this
+  repository.
+
 * `project` - (Optional) The ID of the project in which the resource belongs.
     If it is not provided, the provider project is used.
 
@@ -267,6 +324,65 @@ The following arguments are supported:
   (Optional)
   Entries with a greater priority value take precedence in the pull order.
 
+<a name="nested_cleanup_policies"></a>The `cleanup_policies` block supports:
+
+* `id` - (Required) The identifier for this object. Format specified above.
+
+* `action` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Policy action.
+  Possible values are: `DELETE`, `KEEP`.
+
+* `condition` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Policy condition for matching versions.
+  Structure is [documented below](#nested_condition).
+
+* `most_recent_versions` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Policy condition for retaining a minimum number of versions. May only be
+  specified with a Keep action.
+  Structure is [documented below](#nested_most_recent_versions).
+
+
+<a name="nested_condition"></a>The `condition` block supports:
+
+* `tag_state` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions by tag status.
+  Default value is `ANY`.
+  Possible values are: `TAGGED`, `UNTAGGED`, `ANY`.
+
+* `tag_prefixes` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions by tag prefix. Applied on any prefix match.
+
+* `version_name_prefixes` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions by version name prefix. Applied on any prefix match.
+
+* `package_name_prefixes` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions by package prefix. Applied on any prefix match.
+
+* `older_than` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions older than a duration.
+
+* `newer_than` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions newer than a duration.
+
+<a name="nested_most_recent_versions"></a>The `most_recent_versions` block supports:
+
+* `package_name_prefixes` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Match versions by package prefix. Applied on any prefix match.
+
+* `keep_count` -
+  (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))
+  Minimum number of versions to keep.
+
 <a name="nested_remote_repository_config"></a>The `remote_repository_config` block supports:
 
 * `description` -