Fix mw api login

Due to the upgrade of mediawiki, login using LDAP password for wikigen is broken. Admin must create a bot password in https://www.grid5000.fr/w/Special:BotPasswords and add the generated password in ~/.grid5000_api.yml via

botpassword: sdfklsdfksldkfsldfksld@imzerz23965

approved this merge request

enabled an automatic merge when the pipeline for 265ab64b succeeds

canceled the automatic merge

merged

mentioned in commit d62145cd