OpenSUSE Leap 15.3 is out of support since 2022. This patch remove the
support of OpenSUSE Leap 15.3 and replace it with the OpenSUSE Leap
15.5.
Add the grub2-x86_64-efi package in the pkg-map of the bootloader
element to allow EFI support.
Replace version 15.3 to 15.5 in every required location.
Add dracut-mkinitrd-deprecated package in package-installs.yaml of
the opensuse element to support the usage of the deprecated mkinitrd
command from the zypper element.
Change-Id: Ie903ffcf229d8e32374c4a1346b5295990c83ff4
b242f913a8