The VMs are not always resumes on reboot

The “libvirt-guests” service can conflict with “onevm-all” and we
don't need to wait for each VM to boot during start.

* posttemplate/10-libvirt-guests: disable the “libvirt-guests” service.

* init/onenode.service (ExecStart): use default wait timeout (60s).
  (TimeoutStartSec): wait for longer than the default timeout.
  (ExecReload): just try to resume any remaining VMs.
  (ExecStop): wait longer for VM to suspend.
  (TimeoutStopSec): wait for longer than the stop timeout.

* scripts/onevm-all: schedule actions in parallel and wait globally
  for their executions.

Ref: #22155

posttemplate/10-libvirt-guests

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+echo "Disable and mask libvirt-guests service"
+for action in stop disable mask
+do
+    systemctl ${action} libvirt-guests.service 2> /dev/null
+done
+
+exit 0