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/modules/apps/coredns/config.tf

@@ -2,6 +2,8 @@
 locals {
   configfile = templatefile("${path.module}/resources/Corefile.tpl", {
     zones               = var.zones
+    override_hosts      = length(var.override_hosts) > 0
+    hosts               = var.override_hosts
     forward_dns_servers = join(" ", var.forward_dns_servers)
   })
   configfile_checksum = md5(local.configfile)

terraform/modules/apps/coredns/resources/Corefile.tpl

@@ -1,4 +1,12 @@
 .:53 {
+%{ if override_hosts ~}
+    hosts {
+%{ for h in hosts ~}
+      ${h.ip} ${h.name}
+%{ endfor ~}
+      fallthrough
+    }
+%{ endif ~}
     errors
     health {
       lameduck 5s

terraform/modules/apps/coredns/variables.tf

@@ -10,6 +10,15 @@ variable "forward_dns_servers" {
   default     = ["8.8.8.8", "8.8.4.4"]
 }
 
+variable "override_hosts" {
+  description = "Override hosts"
+  type = list(object({
+    ip   = string
+    name = string
+  }))
+  default = []
+}
+
 variable "zones" {
   description = "Zones to be managed by coredns"
   type = list(object({