Add Nepali Template:User sandbox in clean_sandbox.py
Add Nepali Template:User sandbox in clean_sandbox.py

Bug: T186968
Change-Id: I7e73daa71f1aa59d1bb1e9d6aef5cbd9a38b1e3d

PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core,wikimedia/pywikibot-core