Add Helm import/export

lib/gitlab/import_export/import_export.yml

@@ -54,7 +54,8 @@ project_tree:
   - :auto_devops
   - :triggers
   - :pipeline_schedules
-  - :cluster
+  - clusters:
+    - :application_helm
   - :services
   - :hooks
   - protected_branches:

lib/gitlab/import_export/relation_factory.rb

@@ -8,8 +8,8 @@ module Gitlab
                     triggers: 'Ci::Trigger',
                     pipeline_schedules: 'Ci::PipelineSchedule',
                     builds: 'Ci::Build',
-                    cluster: 'Clusters::Cluster',
                     clusters: 'Clusters::Cluster',
+                    application_helm: 'Clusters::Applications::Helm',
                     hooks: 'ProjectHook',
                     merge_access_levels: 'ProtectedBranch::MergeAccessLevel',
                     push_access_levels: 'ProtectedBranch::PushAccessLevel',

spec/lib/gitlab/import_export/all_models.yml

@@ -147,7 +147,8 @@ deploy_keys:
 - user
 - deploy_keys_projects
 - projects
-cluster:
+clusters:
+- application_helm
 - cluster_projects
 - projects
 - user
@@ -160,6 +161,8 @@ provider_gcp:
 - cluster
 platform_kubernetes:
 - cluster
+application_helm:
+- cluster
 services:
 - project
 - service_hook
@@ -191,6 +194,7 @@ project:
 - tags
 - chat_services
 - cluster
+- clusters
 - cluster_project
 - creator
 - group
@@ -299,4 +303,4 @@ push_event_payload:
 - event
 issue_assignees:
 - issue
-- assignee
\ No newline at end of file
+- assignee