Low: grub2 security, bug fix, and enhancement update (Oracle Linux 7)

[2.02-0.29.0.1]
- Fix comparison in patch for 18504756
- Remove symlink to grub environment file during uninstall on EFI platforms
[bug 19231481]
- update Oracle Linux certificates (Alexey Petrenko)
- Put 'with' in menuentry instead of 'using' [bug 18504756]
- Use different titles for UEK and RHCK kernels [bug 18504756]

[2.02-0.29]
- Fix DHCP6 timeouts due to failed network stack once more.
Resolves: rhbz#1267139

[2.02-0.28]
- Once again, rebuild for the right build target.
Resolves: CVE-2015-5281

[2.02-0.27]
- Remove multiboot and multiboot2 modules from the .efi builds; they
should never have been there.
Resolves: CVE-2015-5281

[2.02-0.26]
- Be more aggressive about trying to make sure we use the configured SNP
device in UEFI.
Resolves: rhbz#1257475

[2.02-0.25]
- Force file sync to disk on ppc64le machines.
Resolves: rhbz#1212114

[2.02-0.24]
- Undo 0.23 and fix it a different way.
Resolves: rhbz#1124074

[2.02-0.23]
- Reverse kernel sort order so they're displayed correctly.
Resolves: rhbz#1124074

[2.02-0.22]
- Make upgrades work reasonably well with grub2-setpassword .
Related: rhbz#985962

[2.02-0.21]
- Add a simpler grub2 password config tool
Related: rhbz#985962
- Some more coverity nits.

[2.02-0.20]
- Deal with some coverity nits.
Related: rhbz#1215839
Related: rhbz#1124074

[2.02-0.19]
- Rebuild for Aarch64
- Deal with some coverity nits.
Related: rhbz#1215839
Related: rhbz#1124074

[2.02-0.18]
- Update for an rpmdiff problem with one of the man pages.
Related: rhbz#1124074