Bug#13344753 MYSQL_SECURE_INSTALLATION SCRIPT DOES NOT CHECK USER INPUT
Bug#13344753 MYSQL_SECURE_INSTALLATION SCRIPT DOES NOT CHECK USER INPUT

Loop until valid answer is given. Variants of y,yes and
n,no and blank (meaning default) are considered valid.

natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2,natsys/mariadb_10.2