added missing files

infra/monitoring/vault-agent/agent.hcl

@@ -0,0 +1,31 @@
+exit_after_auth = false
+pid_file        = "/tmp/vault-agent.pid"
+
+vault {
+  address = "http://vault:8200"
+}
+
+auto_auth {
+  method "approle" {
+    mount_path = "auth/approle"
+    config = {
+      role_id_file_path   = "/etc/vault/role_id"
+      secret_id_file_path = "/etc/vault/secret_id"
+      remove_secret_id_file_after_reading = false
+    }
+  }
+  sink "file" { config = { path = "/vault/secrets/.vault-token" } }
+}
+
+template {
+  source      = "/etc/vault/templates/grafana.env.ctmpl"
+  destination = "/vault/secrets/grafana.env"
+  perms       = "0644"
+  command     = "chown 472:472 /vault/secrets/grafana.env"
+}
+
+template {
+  source      = "/etc/vault/templates/alertmanager.yml.ctmpl"
+  destination = "/vault/alertmanager/alertmanager.yml"
+  perms       = "0644"
+}