Fix a bug try_performing_ro_admin_basic_auth and try_performing_full_admin_basic_auth
Fix a bug try_performing_ro_admin_basic_auth and try_performing_full_admin_basic_auth

Do not call `request.basic_auth` if password cannot be obtained.

clemensg/passenger,clemensg/passenger,cgvarela/passenger,clemensg/passenger,kewaunited/passenger,antek-drzewiecki/passenger,cgvarela/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,cgvarela/passenger,kewaunited/passenger,phusion/passenger,clemensg/passenger,clemensg/passenger,kewaunited/passenger,clemensg/passenger,antek-drzewiecki/passenger,kewaunited/passenger,kewaunited/passenger,kewaunited/passenger,cgvarela/passenger,phusion/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,cgvarela/passenger,antek-drzewiecki/passenger,phusion/passenger,phusion/passenger,phusion/passenger,clemensg/passenger,kewaunited/passenger,cgvarela/passenger,clemensg/passenger,phusion/passenger,kewaunited/passenger,cgvarela/passenger,phusion/passenger,phusion/passenger,cgvarela/passenger