Log file_creation_time table property (#5232)

Summary:
Log file_creation_time table property when a new table file is created.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5232

Differential Revision: D15033069

Pulled By: sagar0

fbshipit-source-id: aaac56a4c03a8f96c338cad1b0cdb7fbfb887647

db/event_helpers.cc

@@ -120,7 +120,8 @@ void EventHelpers::LogAndNotifyTableFileCreationFinished(
               << table_properties.compression_name << "compression_options"
               << table_properties.compression_options << "creation_time"
               << table_properties.creation_time << "oldest_key_time"
-              << table_properties.oldest_key_time;
+              << table_properties.oldest_key_time << "file_creation_time"
+              << table_properties.file_creation_time;
 
       // user collected properties
       for (const auto& prop : table_properties.readable_properties) {