*os-prober* now uses device mapper alias names in the boot loader configuration
The *os-prober* component previously used the numeric device mapper device in the boot loader configuration. After reboot, when the installer disk image was no longer mounted, the number changed, which rendered the boot entry unusable. Consequently, when two instances of Red Hat Enterprise Linux were installed on one machine, one of them failed to boot. To fix this bug, *os-prober* now uses device mapper alias names instead of the direct enumerated device mapper names. Because the alias names are more stable, the boot entry works as expected in the described situation.