Use CPACK_RPM_FILE_NAME="RPM-DEFAULT"
Use CPACK_RPM_FILE_NAME="RPM-DEFAULT"

This has been implemented in for cmake-3.6 to match distro version
of what the filename should look like.

Thanks to Domen Vranka for the suggestion.

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