[tests] Install oauthlib<3.0.0 first
[tests] Install oauthlib<3.0.0 first

Bug: T213635
Change-Id: Iefa32968a46d6ec20f7cd92c9368a6f1c66b34de

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