[PVE] Monitor node status when using QDevice.

[fodinabor]

General information

When adding a QDevice to Proxmox VE to reach quorum (usually when having an even number of hosts), pvecm shows more info which currently cannot be parsed. Allow parsing this variant as well.

The CheckMK agent's output looks like this after adding a QDevice:

<<<pvecm_nodes>>>

Membership information
----------------------
    Nodeid      Votes    Qdevice Name
         1          1    A,V,NMW vm1 (local)
         2          1    A,V,NMW vm2
         0          1            Qdevice

With this patch, it'll show the nodes as expected:

Without this patch, the services just vanished after adding the Qdevice, due to a parsing error.

[github-actions]

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[fodinabor]

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[fodinabor]

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