- Clear the databases before the cluster is created (and storages started) to
avoid the latter load a false configuration.
- Ensure replication is done before drop a node in storage tests.
- Admin node take the first allocated port for consistency.


git-svn-id: https://svn.erp5.org/repos/neo/trunk@1300 71dcc9de-d417-0410-9af5-da40c76e7ee4