Description of problem:

After the Overcloud Compute System Upgrade FFU OSP17 stage some kernel args parameters of compute node are duplicated:

~~~
[tripleo-admin@computedpdksriov-1 ~]$ cat /etc/redhat-release
Red Hat Enterprise Linux release 9.2 (Plow)

[tripleo-admin@computedpdksriov-1 ~]$ cat /etc/rhosp-release 
Red Hat OpenStack Platform release 17.1.0 Beta (Wallaby)

[tripleo-admin@computedpdksriov-1 ~]$ cat /proc/cmdline 
BOOT_IMAGE=(hd4,gpt3)/boot/vmlinuz-5.14.0-284.11.1.el9_2.x86_64 root=UUID=b244ce33-d6b6-41a6-a3d8-222a1fe4fc53 ro no_timer_check rhgb quiet default_hugepagesz=1GB hugepagesz=1G hugepages=64 iommu=pt intel_iommu=on tsx=off isolcpus=2-19,22-39 skew_tick=1 nohz=on nohz_full=2-19,22-39 rcu_nocbs=2-19,22-39 tuned.non_isolcpus=00300003 intel_pstate=disable nosoftlockup rd.plymouth=0 plymouth.enable=0 crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M skew_tick=1 nohz=on nohz_full=2-19,22-39 rcu_nocbs=2-19,22-39 tuned.non_isolcpus=00300003 intel_pstate=disable nosoftlockup
~~~

As can be seen about the "skew_tick=1 nohz=on nohz_full=2-19,22-39 rcu_nocbs=2-19,22-39 tuned.non_isolcpus=00300003 intel_pstate=disable nosoftlockup" are duplicated in /proc/cmdline.

This could be a problem in case the duplicated parameters are not identical.

Version-Release number of selected component (if applicable):
FFU 16.2 -> 17.1 (Multi RHEL)

How reproducible:
100%

Steps to Reproduce:
1. Run Overcloud Compute System Upgrade FFU OSP17
2.
3.

Actual results:


Expected results:
No kernel args duplicated.

Additional info: