move subscription API path to /nodes

This aligns it with PVE and allows the widget toolkit's update window
"refresh" to work without modifications once POST /apt/update is
implemented.

Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>

src/api2/node/subscription.rs

@@ -0,0 +1,56 @@
+use anyhow::{Error};
+use serde_json::{json, Value};
+
+use proxmox::api::{api, Router, Permission};
+
+use crate::tools;
+use crate::config::acl::PRIV_SYS_AUDIT;
+use crate::api2::types::NODE_SCHEMA;
+
+#[api(
+    input: {
+        properties: {
+            node: {
+                schema: NODE_SCHEMA,
+            },
+        },
+    },
+    returns: {
+        description: "Subscription status.",
+        properties: {
+            status: {
+                type: String,
+                description: "'NotFound', 'active' or 'inactive'."
+            },
+            message: {
+                type: String,
+                description: "Human readable problem description.",
+            },
+            serverid: {
+                type: String,
+                description: "The unique server ID.",
+            },
+            url: {
+                type: String,
+                description: "URL to Web Shop.",
+            },
+        },
+    },
+    access: {
+        permission: &Permission::Privilege(&[], PRIV_SYS_AUDIT, false),
+    },
+)]
+/// Read subscription info.
+fn get_subscription(_param: Value) -> Result<Value, Error> {
+
+    let url = "https://www.proxmox.com/en/proxmox-backup-server/pricing";
+    Ok(json!({
+        "status": "NotFound",
+	"message": "There is no subscription key",
+	"serverid": tools::get_hardware_address()?,
+	"url":  url,
+     }))
+}
+
+pub const ROUTER: Router = Router::new()
+    .get(&API_METHOD_GET_SUBSCRIPTION);