edpm_kernel: Fix Reboot Task

[vkhitrin]

Reboot task may fail due to the remote user being an unprivileged user
(non root) which is not able to perform a reboot.
By escalating the permissions in the task, the reboot task should pass.

[openshift-ci]

Hi @vkhitrin. Thanks for your PR.

I'm waiting for a openstack-k8s-operators member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[vkhitrin]

Planning to test it on the baremetal EDPM node, which encountered this issue initially.

[softwarefactory-project-zuul]

Build failed (check pipeline). Post recheck (without leading slash)
to rerun all jobs. Make sure the failure cause has been resolved before
you rerun jobs.

https://review.rdoproject.org/zuul/buildset/9d232d1e76d244689f5b5417a0a6c28d

✔️ edpm-ansible-molecule-edpm_podman SUCCESS in 5m 35s
✔️ edpm-ansible-molecule-edpm_module_load SUCCESS in 4m 48s
✔️ edpm-ansible-molecule-edpm_kernel SUCCESS in 11m 10s
✔️ edpm-ansible-molecule-edpm_libvirt SUCCESS in 5m 17s
✔️ edpm-ansible-molecule-edpm_nova SUCCESS in 5m 35s
✔️ edpm-ansible-content-provider SUCCESS in 1h 37m 38s
❌ edpm-ansible-crc-podified-edpm-deployment FAILURE in 1h 24m 17s
✔️ edpm-ansible-crc-podified-edpm-baremetal SUCCESS in 48m 24s

[vkhitrin]

I can confirm this works:

/tmp/key_rsa [email protected] cat /proc/cmdline
Warning: Permanently added '192.168.70.100' (ED25519) to the list of known hosts.
BOOT_IMAGE=(hd0,gpt3)/vmlinuz-5.14.0-354.el9.x86_64 root=LABEL=img-rootfs ro console=ttyS0,115200n8 no_timer_check crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M default_hugepagesz=1GB hugepagesz=1G hugepages=64 iommu=pt intel_iommu=on tsx=off isolcpus=2-47,50-95 console=ttyS0,115200 no_timer_check memtest=0 boot=LABEL=mkfs_boot skew_tick=1 nohz=on nohz_full=2-47,50-95 rcu_nocbs=2-47,50-95 tuned.non_isolcpus=00030000,00000003 intel_pstate=disable nosoftlockup

[root@edpm-compute-0 ~]# uptime
 14:55:41 up 5 min,  2 users,  load average: 0.02, 0.22, 0.14

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jpodivin, vkhitrin

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[jpodivin]

/ok-to-test

[jpodivin]

recheck