Comment 1 for bug 1592729

Thank you for taking the time to report this bug and helping to make Ubuntu better. Lars has fixed some of these in https://anonscm.debian.org/cgit/pkg-mysql/mysql-5.7.git/commit/?id=3729592ed5d1e428ba8a215829e2d18c7f669822 (bug 1577096) but I think log_queries_not_using_indexes is left. We should change hyphens to underscores while we are changing the others since we have to do a conffile change at least once to fix the others, so might as well take the opportunity to make things consistent.