On s390x architecture the CPU clock speed is not discovered and shows 0 MHz.

    Use Assisted Installer (Agend-based Installer shows the same behavior) and generate the image and boot the node. On Assisted Installer WebUI the clock speed is discovered with 0 MHz.
The error is in Assisted-Installer-Agend code.

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    CPU clock speed shows 0 MHz

    CPU clock speed should show the "CPU static MHz" value.

    For s390x there are two values available by lscpu: 
- CPU static MHz
- CPU dynamic MHz
-> Only "CPU static MHz" show the necessary value.