Fix utils/encode_qp tests to assume utf-8
Fix utils/encode_qp tests to assume utf-8

fatalbanana/Haraka,zombified/Haraka,bsmr-x-script/Haraka,fatalbanana/Haraka,typingArtist/Haraka,slattery/Haraka,msimerson/Haraka,hatsebutz/Haraka,craigslist/Haraka,Synchro/Haraka,Synchro/Haraka,msimerson/Haraka,smfreegard/Haraka,typingArtist/Haraka,haraka/Haraka,smfreegard/Haraka,smfreegard/Haraka,craigslist/Haraka,fatalbanana/Haraka,craigslist/Haraka,slattery/Haraka,bsmr-x-script/Haraka,hatsebutz/Haraka,craigslist/Haraka,slattery/Haraka,zombified/Haraka,haraka/Haraka,haraka/Haraka,typingArtist/Haraka,zombified/Haraka,slattery/Haraka,bsmr-x-script/Haraka,msimerson/Haraka,haraka/Haraka,Synchro/Haraka,zombified/Haraka,msimerson/Haraka,typingArtist/Haraka,hatsebutz/Haraka,smfreegard/Haraka,bsmr-x-script/Haraka,hatsebutz/Haraka,fatalbanana/Haraka,Synchro/Haraka