lxd/instance/drivers/driver_qemu: attempt to kill qemu proc on stop
lxd/instance/drivers/driver_qemu: attempt to kill qemu proc on stop

If the qemu monitor is unresponsive during a stop operation, check to
see if the qemu process is still running (by inspecting
/proc/<pid>/cmdline). If it is, then attempt to kill it.

Signed-off-by: Spencer Alt <f42c50b43d281aa04bd75527b4edc4ee816487a6@protonmail.com>

stgraber/lxd,stgraber/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,lxc/lxd,hallyn/lxd,lxc/lxd,hallyn/lxd,atxwebs/lxd,stgraber/lxd,lxc/lxd,hallyn/lxd,stgraber/lxd,atxwebs/lxd,atxwebs/lxd,stgraber/lxd,stgraber/lxd,lxc/lxd,atxwebs/lxd,lxc/lxd,hallyn/lxd,hallyn/lxd,lxc/lxd