Robuta

https://lists.wikimedia.org/hyperkitty/list/pywikibot-commits@lists.wikimedia.org/thread/5ZNZPUTH6NNKAOGIR7XRCVKR36NCYK6G/ [Gerrit] ...core[tests]: [test] Test flushing ui and redefining TerminalHandler for T282962 -... gerrit core tests flushing