fix(sdn-controller): only admin can create private networks (#5200)

CHANGELOG.unreleased.md

@@ -27,3 +27,5 @@
 > - major: if the change breaks compatibility
 >
 > In case of conflict, the highest (lowest in previous list) `$version` wins.
+
+xo-server-sdn-controller patch

packages/xo-server-sdn-controller/src/index.js

@@ -439,6 +439,7 @@ class SDNController extends EventEmitter {
       mtu: { type: 'integer', optional: true },
       preferredCenterId: { type: 'string', optional: true },
     }
+    createPrivateNetwork.permission = 'admin'
 
     // ---------------- OpenFlow rules method ----------------------------------