feat(tem) : add ressource smtp auth user and exemple export gitlab variable in doc (#2428)

Author: jremy42

docs/resources/tem_domain.md

@@ -51,6 +51,37 @@ resource "scaleway_domain_record" "mx" {
 }
 ```
 
+
+### Configuring GitLab Project Variables
+
+```terraform
+
+variable "domain_name" {
+  type    = string
+}
+
+data "scaleway_tem_domain" "my_domain" {
+  name       = var.domain_name
+}
+
+resource "gitlab_project_variable" "smtp_host" {
+  key   = "SMTP_AUTH_USER"
+  value = data.scaleway_tem_domain.my_domain.smtps_auth_user
+}
+
+resource "gitlab_project_variable" "smtp_port" {
+  key   = "SMTP_PORT"
+  value = data.scaleway_tem_domain.my_domain.smtps_port
+}
+
+resource "gitlab_project_variable" "smtp_host" {
+  key   = "SMTP_HOST"
+  value = data.scaleway_tem_domain.my_domain.smtps_host
+}
+
+```
+
+
 ## Argument Reference
 
 The following arguments are supported:
@@ -101,6 +132,8 @@ In addition to all arguments above, the following attributes are exported:
 
 - `smtps_port_alternative` - The SMTPS port to use to send emails over TLS Wrapper.
 
+- `smtps_auth_user` - SMTPS auth user refers to the identifier for a user authorized to send emails via SMTPS, ensuring secure email transmission.
+
 - `mx_blackhole` - The Scaleway's blackhole MX server to use if you do not have one.
 
 - `reputation` - The domain's reputation.

scaleway/resource_tem_domain.go

@@ -111,6 +111,11 @@ func resourceScalewayTemDomain() *schema.Resource {
 				Computed:    true,
 				Description: fmt.Sprintf("SMTPS port to use to send emails over TLS Wrapper. (Port %d)", tem.SMTPSPort),
 			},
+			"smtps_auth_user": {
+				Type:        schema.TypeString,
+				Computed:    true,
+				Description: "SMTPS auth user refers to the identifier for a user authorized to send emails via SMTPS, ensuring secure email transmission",
+			},
 			"smtps_port_alternative": {
 				Type:        schema.TypeInt,
 				Computed:    true,
@@ -220,7 +225,7 @@ func resourceScalewayTemDomainRead(ctx context.Context, d *schema.ResourceData,
 	_ = d.Set("reputation", flattenDomainReputation(domain.Reputation))
 	_ = d.Set("region", string(region))
 	_ = d.Set("project_id", domain.ProjectID)
-
+	_ = d.Set("smtps_auth_user", domain.ProjectID)
 	return nil
 }