fix(xo-server/config): configure plugins on config import (#6171)

See https://xcp-ng.org/forum/topic/5720/ztp-restore-xoa-from-backup

CHANGELOG.unreleased.md

@@ -11,6 +11,8 @@
 
 > Users must be able to say: “I had this issue, happy to know it's fixed”
 
+- [Plugins] Automatically configure plugins when a configuration file is imported (PR [#6171](https://github.com/vatesfr/xen-orchestra/pull/6171))
+
 ### Packages to release
 
 > Packages will be released in the order they are here, therefore, they should
@@ -30,3 +32,4 @@
 
 - xen-api minor
 - @xen-orchestra/proxy patch
+- xo-server patch

packages/xo-server/src/xo-mixins/plugins.mjs

@@ -27,7 +27,15 @@ export default class {
       app.addConfigManager(
         'plugins',
         () => this._pluginsMetadata.get(),
-        plugins => Promise.all(plugins.map(plugin => this._pluginsMetadata.save(plugin)))
+        plugins =>
+          Promise.all(
+            plugins.map(async plugin => {
+              await this._pluginsMetadata.save(plugin)
+              if (plugin.configuration !== undefined && this._plugins[plugin.id] !== undefined) {
+                await this.configurePlugin(plugin.id, plugin.configuration)
+              }
+            })
+          )
       )
     })
   }