[Reporting][Serverless] No image reporting warnings in kibana server logs for serverless (#169297)

## Summary

This PR removes reporting deprecation log messages in kibana server logs
on serverless environments.

### Checklist

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

---------
Co-authored-by: Tim Sullivan <tsullivan@users.noreply.github.com>

config/serverless.yml

@@ -56,7 +56,6 @@ xpack.canvas.enabled: false
 xpack.cloud_integrations.data_migration.enabled: false
 data.search.sessions.enabled: false
 advanced_settings.enabled: false
-xpack.screenshotting.enabled: false
 
 # Disable the browser-side functionality that depends on SecurityCheckupGetStateRoutes
 xpack.security.showInsecureClusterWarning: false
@@ -141,3 +140,8 @@ xpack.task_manager.allow_reading_invalid_state: false
 
 ## TaskManager requeue invalid tasks, supports ZDT
 xpack.task_manager.requeue_invalid_tasks.enabled: true
+
+# Reporting feature
+xpack.screenshotting.enabled: false
+xpack.reporting.roles.enabled: false
+xpack.reporting.statefulSettings.enabled: false

x-pack/plugins/reporting/server/config/create_config.ts

@@ -44,10 +44,9 @@ export function createConfig(
     ipaddr.isValid(kibanaServerHostname) &&
     !sum(ipaddr.parse(kibanaServerHostname).toByteArray())
   ) {
-    logger.warn(
-      `Found 'server.host: "0.0.0.0"' in Kibana configuration. Reporting is not able to use this as the Kibana server hostname.` +
-        ` To enable PNG/PDF Reporting to work, 'xpack.reporting.kibanaServer.hostname: localhost' is automatically set in the configuration.` +
-        ` You can prevent this message by adding 'xpack.reporting.kibanaServer.hostname: localhost' in kibana.yml.`
+    logger.info(
+      `Overriding server host address "0.0.0.0" in Reporting runtime config,` +
+        ` using "xpack.reporting.kibanaServer.hostname: localhost".`
     );
     kibanaServerHostname = 'localhost';
   }

x-pack/plugins/reporting/server/deprecations/reporting_role.test.ts

@@ -134,6 +134,13 @@ describe('check deprecations when security is disabled', () => {
 
     expect(await getDeprecationsInfo(context, { reportingCore })).toMatchInlineSnapshot(`Array []`);
   });
+
+  test('logs no deprecations on serverless', async () => {
+    reportingCore = await createMockReportingCore(
+      createMockConfigSchema({ statefulSettings: { enabled: false } })
+    );
+    expect(await getDeprecationsInfo(context, { reportingCore })).toMatchInlineSnapshot(`Array []`);
+  });
 });
 
 it('insufficient permissions', async () => {