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/nextcloud/redis.tf

@@ -0,0 +1,76 @@
+resource "kubernetes_service" "nextcloud_redis" {
+  metadata {
+    name      = "redis"
+    namespace = kubernetes_namespace.nextcloud.metadata[0].name
+  }
+  spec {
+    port {
+      port = 6379
+      name = "redis"
+    }
+    selector = {
+      app = "redis"
+    }
+    cluster_ip = "None"
+  }
+}
+
+resource "kubernetes_deployment" "nextcloud_redis" {
+  metadata {
+    name      = "redis"
+    namespace = kubernetes_namespace.nextcloud.metadata[0].name
+  }
+  spec {
+    selector {
+      match_labels = {
+        app = "redis"
+      }
+    }
+    strategy {
+      type = "RollingUpdate"
+    }
+    template {
+      metadata {
+        labels = {
+          app = "redis"
+        }
+      }
+      spec {
+        container {
+          name  = "redis"
+          image = "redis:latest"
+
+          security_context {
+            allow_privilege_escalation = false
+          }
+
+          readiness_probe {
+            tcp_socket {
+              port = "redis"
+            }
+            initial_delay_seconds = 10
+            period_seconds        = 15
+            success_threshold     = 1
+            failure_threshold     = 3
+          }
+
+          liveness_probe {
+            tcp_socket {
+              port = "redis"
+            }
+            initial_delay_seconds = 10
+            period_seconds        = 15
+            success_threshold     = 1
+            failure_threshold     = 3
+          }
+
+          port {
+            container_port = 6379
+            name           = "redis"
+            protocol       = "TCP"
+          }
+        }
+      }
+    }
+  }
+}