SOLR-17979 Fix smokeTestRelease.py

- not require 'help' folder
- expect 'changelog' folder

Author: janhoy

dev-tools/scripts/smokeTestRelease.py

@@ -637,7 +637,7 @@ def verifyUnpacked(java, artifact, unpackPath, gitRevision, version, testArgs):
   #     in_root_folder.remove(fileName)
 
   if isSrc:
-    expected_src_root_folders = ['build-tools', 'dev-docs', 'dev-tools', 'gradle', 'help', 'solr']
+    expected_src_root_folders = ['build-tools', 'changelog', 'dev-docs', 'dev-tools', 'gradle', 'solr']
     expected_src_root_files = ['build.gradle', 'gradlew', 'gradlew.bat', 'settings.gradle', 'settings-gradle.lockfile', 'versions.lock']
     expected_src_solr_files = ['build.gradle']
     expected_src_solr_folders = ['benchmark',  'bin', 'modules', 'api', 'core', 'cross-dc-manager', 'docker', 'documentation', 'example', 'licenses', 'packaging', 'distribution', 'server', 'solr-ref-guide', 'solrj', 'solrj-streaming', 'solrj-zookeeper', 'test-framework', 'webapp', '.gitignore', '.gitattributes']