Use new synchronization helpers to avoid races when deploying with HA

This helps avoid races when creating the pacemaker resources, either
because database is not installed on one node yet (resulting in the
pacemaker resource not being runnable on that node) or because the
pacemaker resources are created at the same time on multiple nodes.
Use new Chef::Provider::CrowbarPacemakerService provider
Include the HA recipe earlier

As we generate a config file based on a template in the directory that
will be the target for a mount when using HA, we need to get this mount
handled early.
add support for drbd in HA part