factor out and unify sim_hardware_cmd

factor out and unify sim_hardware_cmd

Most things done by sim_hardware_cmd are already abstracted and
available in both, the TestHardware and the RTHardware class.

Abstract out the CRM and LRM control to allow the unification of both
classes sim_hardware_cmd.

As in the last year mostly the regression test systems TestHardware
class saw new features use it as base.

We return now the current status out of the locked context, this
allows to update the simulators GUI out of the locked context.

This changes increases the power of the HA Simulator, but the new
possible actions must be still implemented in its GUI. This will be
done in future patches.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>