Minimize Reboot Test Pod Warnings of PSA

[razo7]

The reboot test pod needs privilage permissions for fetching the node's boot time, and these permissions can be minimized.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: razo7

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[razo7]

/test 4.13-openshift-e2e

[razo7]

/test 4.14-openshift-e2e

[mshitrit]

/test ?

[openshift-ci]

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[mshitrit]

/lgtm
/hold
giving others chance to review

[clobrano]

/lgtm

Giving a chance to get more feedbacks, feel free to unhold
/hold

[razo7]

#68 is going to use the test pod and for stooping Kubelet HostPID: true should be defined in the spec of the testing pod. Thus I am revering this change.

[mshitrit]

/lgtm

[razo7]

\unhold

[razo7]

/unhold