Introduce the checkmptctl actor

[bessonc]

Raise an inhibitor if the mptctl is loaded and in use, and reports the userspace processes which use it.
The suggested patch is not ideal and could be refactored as it adds another inhibitor for the same problem reported by the CheckDetectedDevicesAndDrivers actor. This is essentially to share the logic in pure python, without any additional requirement.

Fixes Red Hat issue #RHEL-15894

Outputs:

Upgrade has been inhibited due to the following problems:
    1. Inhibitor: Leapp detected loaded kernel drivers which have been removed in RHEL 8. Upgrade cannot proceed.
    2. Inhibitor: Detected processes that are using mptctl.
Consult the pre-upgrade report for details and possible remediation.

----------------------------------------
Risk Factor: high (inhibitor)
Title: Detected processes that are using mptctl.
Summary: Leapp detected that the following processes are using the mptctl kernel module which will be removed in RHEL 8:
20914: python -c f=open('/dev/mptctl','r');import time;time.sleep(300) 
14348: python -c f=open('/dev/mptctl','r');import time;time.sleep(300) 
Remediation: [hint] Stop this application or the service that runs this process.
Key: 66e1a0da39c67d3495587ed2d1bd8e810e41288d
----------------------------------------

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[pirat89]

This change is connected to RHEL bug ticket, so for now I set the blocker for merge as it cannobe merged until we have agreement with QE that this change could be added or not to the release. Also not sure about the solution, we will get to it later. This ticket has not been reviewed yet.

[mkluson]

Hi there, as we agreed in the bug (https://issues.redhat.com/browse/RHEL-15894) this issue will be addressed by KCS. Closing this PR