Add Nextcloud deployment and configuration

- Introduced Nextcloud module with Kubernetes resources including deployment, service, ingress, and cron job.
- Configured Apache settings for Nextcloud with SSL support and compression.
- Created secrets for mail and admin credentials.
- Added necessary environment variables for Nextcloud configuration.
- Removed unused Scaleway access and secret keys from secrets and variables.
- Updated CoreDNS module to support custom host overrides.
- Implemented backup bucket policies and lifecycle rules for Scaleway object storage.
- Enhanced IAM policies and applications for backup and email services.
- Added outputs for backup bucket and API keys.

terraform/apps/prod-01/apps.tf

@@ -46,7 +46,7 @@ module "mail" {
   relay_smtp_host     = local.scaleway_smtp_host
   relay_smtp_port     = 465
   relay_smtp_username = var.scaleway_project_id
-  relay_smtp_password = scaleway_iam_api_key.mail_app_api.secret_key
+  relay_smtp_password = local.mail_app_api_secret_key
 
   fetch_emails_schedule = local.fetch_emails_schedule
 
@@ -84,7 +84,7 @@ module "gitea" {
     smtp_host            = local.scaleway_smtp_host
     smtp_port            = local.scaleway_smtp_port
     smtp_user            = var.scaleway_project_id
-    smtp_passwd          = scaleway_iam_api_key.mail_app_api.secret_key
+    smtp_passwd          = local.mail_app_api_secret_key
     secret_key           = var.gitea_secret_key
     internal_token       = var.gitea_internal_token
     disable_ssh          = false
@@ -108,11 +108,11 @@ module "sftpgo" {
   smtp_host     = local.scaleway_smtp_host
   smtp_port     = local.scaleway_smtp_port
   smtp_username = var.scaleway_project_id
-  smtp_password = scaleway_iam_api_key.mail_app_api.secret_key
+  smtp_password = local.mail_app_api_secret_key
   from_email    = "sftpgo@${local.primary_domain}"
 
-  access_key = scaleway_iam_api_key.sftpgo_app_api.access_key
-  secret_key = scaleway_iam_api_key.sftpgo_app_api.secret_key
+  access_key = local.sftpgo_app_api_access_key
+  secret_key = local.sftpgo_app_api_secret_key
 }
 
 module "trivy" {
@@ -124,7 +124,7 @@ module "trivy" {
   smtp_host     = local.scaleway_smtp_host
   smtp_port     = local.scaleway_smtp_port
   smtp_username = var.scaleway_project_id
-  smtp_password = scaleway_iam_api_key.mail_app_api.secret_key
+  smtp_password = local.mail_app_api_secret_key
   from_email    = "trivy@${local.primary_domain}"
   to_email      = "c.alexandre.pires@${local.primary_domain}"
 }