rules: add elevator= kernel command line parameter
Kernel removed the elevator= option, so let's reintroduce
it for rhel8 via udev rule.
rhel-only
Resolves: #1670126
patch_name: 0089-rules-add-elevator-kernel-command-line-parameter.patch
present_in_specfile: true
location_in_specfile: 89
squash_commits: true