Add webserver configuration to bug report

Author: RoSk0

.github/ISSUE_TEMPLATE/bug_report.md

@@ -28,7 +28,7 @@ If applicable, add screenshots to help explain your problem.
 - PHP version in use
 - Drupal core version
 - SimpleSAMLphp version
-- webserver version
+- webserver version and configuration
 
 **Additional context**
 Add any other context about the problem here.