move cfs update to common code

move cfs update to common code

We updated the CRM and LRM view of the cluster state only in the PVE2
environment, outside of all regression testing and simulation scope.

Further, we ignored if this update failed and happily worked with an
empty state, resulting in strange actions, e.g., the removal of all
(not so) "stale" services or changing the all but the masters node
state to unknown.

This patch tries to improve this by moving out the update in a own
environment method, cluster_update_state, calling this in the LRM and
CRM and saving its result.
As with our introduced functionallity to simulate cfs rw or update
errors we can also simulate failures of this state update with the RT
system.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
Reviewed-by: Dominik Csapak <d.csapak@proxmox.com>
Tested-by: Dominik Csapak <d.csapak@proxmox.com>