[Pacemaker] Master/Slave drbd setup not working as expected

[Luca Meron]

> Firewall:slave cannot run on a different node.  I assume you are
> trying to have the DRBD masters on the same node?  That should be
> something like:
> 
> colocation FirewallDiskWithWork inf: Firewall:Master Config:Master

that is! thanks!!!!