Use a fake greeting for testing run_continuation()
Use a fake greeting for testing run_continuation()

This makes the test more universally useful in exercising run_continuation()
itself even with forks that e.g. use custom greetings

msimerson/qpsmtpd,smtpd/qpsmtpd,priyadi/qpsmtpd,salvis/qpsmtpd,priyadi/qpsmtpd,smtpd/qpsmtpd,salvis/qpsmtpd,msimerson/qpsmtpd,priyadi/qpsmtpd,sieutruc/qpsmtpd,sieutruc/qpsmtpd,sieutruc/qpsmtpd