Add yarn log files to gitignore (#3003)

* Add yarn-error.log to gitignore

* Add yarn-debug.log to gitignore

.gitignore

@@ -50,6 +50,10 @@ redis
 # Ignore npm debug log
 npm-debug.log
 
+# Ignore yarn log files
+yarn-error.log
+yarn-debug.log
+
 # Ignore Docker option files
 docker-compose.override.yml