Unauthorized route migration for routes owned by kibana-management (#214782)

### Authz API migration for unauthorized routes

This PR migrates last unauthorized routes owned by your team to a new
security configuration.
Please refer to the documentation for more information: [Authorization
API](https://docs.elastic.dev/kibana-dev-docs/key-concepts/security-api-authorization)

### **Before migration:**
```ts
router.get({
  path: '/api/path',
  ...
}, handler);
```

### **After migration:**
```ts
router.get({
  path: '/api/path',
  security: {
    authz: {
      enabled: false,
      reason: 'This route is opted out from authorization because ...',
    },
  },
  ...
}, handler);
```

Author: elena-shostak

x-pack/platform/plugins/private/grokdebugger/server/lib/kibana_framework.ts

@@ -60,6 +60,7 @@ export class KibanaFramework {
     const routeConfig = {
       path: config.path,
       validate: config.validate,
+      security: config.security,
     };
 
     switch (config.method) {

x-pack/platform/plugins/shared/license_management/server/routes/api/license/register_start_trial_routes.ts

@@ -35,14 +35,26 @@ export function registerStartTrialRoutes({
     }
   );
 
-  router.post({ path: addBasePath('/start_trial'), validate: false }, async (ctx, req, res) => {
-    const { client } = (await ctx.core).elasticsearch;
-    try {
-      return res.ok({
-        body: await startTrial({ client, licensing }),
-      });
-    } catch (error) {
-      return handleEsError({ error, response: res });
+  router.post(
+    {
+      path: addBasePath('/start_trial'),
+      validate: false,
+      security: {
+        authz: {
+          enabled: false,
+          reason: 'Relies on es client for authorization',
+        },
+      },
+    },
+    async (ctx, req, res) => {
+      const { client } = (await ctx.core).elasticsearch;
+      try {
+        return res.ok({
+          body: await startTrial({ client, licensing }),
+        });
+      } catch (error) {
+        return handleEsError({ error, response: res });
+      }
     }
-  });
+  );
 }