fix: [CDS-115446]: Fix application set creation when using helm source in template. (#1305)

* 43d586 add changelog

* 34287c update subcategory, remove computed

* 439132 fix appset list, ang git generator, add import example

* d4d017 update app docs

* c6e8a7 update appset docs

* 07a0bb fix: [CDS-115446]: Fix problem with creating application set, remove perpetual diff

Author: mteodor

.changelog/1305.txt

@@ -0,0 +1,9 @@
+```release-note:fix
+  resource: platform_gitops_applicationset: Fix list generator serialization. Elements are now properly included (base64-encoded) in create/update requests instead of sending an empty list.
+  Added missing fields for helm source in schema used for applicationset, this prevented creating applicaitonset with helm source configured.
+  Fixed issue with perpetual diff for cluster generator.
+  Fixed issue with list generator not being properly propageted to appset k8s manifest ( element array wasnt actually passed )
+  Fixed issue with files and directories field for git generator, similar it wasn propagated to appsets k8s manifest.
+  Added import docs for applicationset.
+  Added fields for app and updated docs.
+```

docs/resources/platform_gitops_applications.md

@@ -141,6 +141,7 @@ Optional:
 
 - `destination` (Block List) Information about the GitOps application's destination. (see [below for nested schema](#nestedblock--application--spec--destination))
 - `project` (String) The ArgoCD project name corresponding to this GitOps application. Value must match mappings of ArgoCD projects to harness project.
+- `revision_history_limit` (String) Revision history limit for the application.
 - `source` (Block List, Max: 1) Contains all information about the source of the GitOps application. (see [below for nested schema](#nestedblock--application--spec--source))
 - `sources` (Block List) List of sources for the GitOps application. Multi Source support (see [below for nested schema](#nestedblock--application--spec--sources))
 - `sync_policy` (Block List, Max: 1) Controls when a sync will be performed in response to updates in git. (see [below for nested schema](#nestedblock--application--spec--sync_policy))
@@ -316,9 +317,10 @@ Optional:
 
 - `chart` (String) Helm chart name, and must be specified for the GitOps applications sourced from a helm repo.
 - `directory` (Block List) Options for applications of type plain YAML or Jsonnet. (see [below for nested schema](#nestedblock--application--spec--sources--directory))
-- `helm` (Block List) Holds helm specific options. (see [below for nested schema](#nestedblock--application--spec--sources--helm))
+- `helm` (Block List, Max: 1) Helm specific options. (see [below for nested schema](#nestedblock--application--spec--sources--helm))
 - `ksonnet` (Block List) Ksonnet specific options. (see [below for nested schema](#nestedblock--application--spec--sources--ksonnet))
 - `kustomize` (Block List) Options specific to a GitOps application source specific to Kustomize. (see [below for nested schema](#nestedblock--application--spec--sources--kustomize))
+- `name` (String) Name is used to refer to a source and is displayed in the UI. It is used in multi-source Applications.
 - `path` (String) Directory path within the git repository, and is only valid for the GitOps applications sourced from git.
 - `plugin` (Block List) Options specific to config management plugins. (see [below for nested schema](#nestedblock--application--spec--sources--plugin))
 - `ref` (String) Reference name to be used in other source spec, used for multi-source applications.
@@ -369,34 +371,35 @@ Optional:
 
 Optional:
 
-- `file_parameters` (Block List) File parameters to the helm template. (see [below for nested schema](#nestedblock--application--spec--sources--helm--file_parameters))
-- `ignore_missing_value_files` (Boolean) Prevents 'helm template' from failing when value_files do not exist locally.
-- `parameters` (Block List) List of helm parameters which are passed to the helm template command upon manifest generation. (see [below for nested schema](#nestedblock--application--spec--sources--helm--parameters))
-- `pass_credentials` (Boolean) Indicates if to pass credentials to all domains (helm's --pass-credentials)
-- `release_name` (String) Helm release name to use. If omitted it will use the GitOps application name.
-- `skip_crds` (Boolean) Indicates if to skip CRDs during helm template. Corresponds to helm --skip-crds
+- `file_parameters` (Block List) File parameters for the helm template. (see [below for nested schema](#nestedblock--application--spec--sources--helm--file_parameters))
+- `ignore_missing_value_files` (Boolean) Prevents 'helm template' from failing when `value_files` do not exist locally by not appending them to 'helm template --values'.
+- `parameters` (Block List) Helm parameters which are passed to the helm template command upon manifest generation. (see [below for nested schema](#nestedblock--application--spec--sources--helm--parameters))
+- `pass_credentials` (Boolean) If true then adds '--pass-credentials' to Helm commands to pass credentials to all domains.
+- `release_name` (String) Helm release name. If omitted it will use the application name.
+- `skip_crds` (Boolean) Whether to skip custom resource definition installation step (Helm's [--skip-crds](https://helm.sh/docs/chart_best_practices/custom_resource_definitions/)).
 - `skip_schema_validation` (Boolean) Indicates if to skip schema validation during helm template. Corresponds to helm --skip-schema-validation
 - `skip_tests` (Boolean) Indicates if to skip tests during helm template. Corresponds to helm --skip-tests
-- `value_files` (List of String) List of helm value files to use when generating a template.
-- `values` (String) Helm values to be passed to helm template, typically defined as a block.
-- `version` (String) Helm version to use for templating (either "2" or "3")
+- `value_files` (List of String) List of Helm value files to use when generating a template.
+- `values` (String) Helm values to be passed to 'helm template', typically defined as a block.
+- `values_object` (Map of String) Helm values to be passed to 'helm template', typically defined as a block.
+- `version` (String) Helm version to use for templating (either "2" or "3").
 
 <a id="nestedblock--application--spec--sources--helm--file_parameters"></a>
 ### Nested Schema for `application.spec.sources.helm.file_parameters`
 
-Optional:
+Required:
 
-- `name` (String) Name of the helm parameter.
-- `path` (String) Path to the file containing the values of the helm parameter.
+- `name` (String) Name of the Helm parameter.
+- `path` (String) Path to the file containing the values for the Helm parameter.
 
 
 <a id="nestedblock--application--spec--sources--helm--parameters"></a>
 ### Nested Schema for `application.spec.sources.helm.parameters`
 
 Optional:
 
-- `force_string` (Boolean) Indicates if helm should interpret booleans and numbers as strings.
-- `name` (String) Name of the helm parameter.
+- `force_string` (Boolean) Determines whether to tell Helm to interpret booleans and numbers as strings.
+- `name` (String) Name of the Helm parameter.
 - `value` (String) Value of the Helm parameter.
 
 
@@ -494,8 +497,6 @@ Optional:
 
 Import is supported using the following syntax:
 
-The [`terraform import` command](https://developer.hashicorp.com/terraform/cli/commands/import) can be used, for example:
-
 ```shell
 # Import a Project level Gitops Application
 terraform import harness_platform_gitops_applications.example <organization_id>/<project_id>/<agent_id>/<app_name>