Comment 3 for bug 2016842

Reviewed: https://review.opendev.org/c/starlingx/stx-puppet/+/880712
Committed: https://opendev.org/starlingx/stx-puppet/commit/876446e35fd6273c2beb43359a82e40af52a0eaf
Submitter: "Zuul (22348)"
Branch: master

commit 876446e35fd6273c2beb43359a82e40af52a0eaf
Author: Jiping Ma <email address hidden>
Date: Sun Apr 9 19:33:14 2023 -0700

    New service parameter for intel_pstate

    This commit implements changing boot commandline intel_pstate using
    the service parameter mechanism. The new "intel_pstate" parameter
    gets stored as a system-wide service parameter and is instrumented
    for controller, worker and storage personalities.

    intel_pstate can be set to [disable, passive, force, no_hwp, hwp_only,
    support_acpi_ppc, per_cpu_perf_limits], and none is the default.
    https://www.kernel.org/doc/Documentation/admin-guide/pm/intel_pstate.rst

    The service parameter command will be used to change intel_pstate
    kernel boot parameters. The new value will take effect only after
    node unlock (reboot).

    Testing:
    PASS: Verify standard installation
    PASS: Verify service parameter configuration using valid/invalid values
    PASS: Verify intel_pstate boot parameters on all nodes

    Partial-Bug: 2016842
    Signed-off-by: Jiping Ma <email address hidden>
    Change-Id: I3c52e4b26ca8c657e2d62030d07f36eff30bb9e5