Configure qemu explicitly to not wait for connection on QMP socket
otherwise it will stall VM execution.
This is observed inside qemu VM started by
In qemu log one can see:
QEMU waiting for connection on: disconnected:unix:/srv/slapgrid/slappart6/var/qmp_socket,server
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Affected version:
root@z600:/srv/slapgrid/slappart6# /opt/slapgrid/7903668a197f3cf8f94375d0739a21e8/parts/kvm/bin/qemu-system-x86_64 --version QEMU emulator version 2.8.0 Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developer