[1092707] If re-install is attempted using a different storage node host name, install fails
During install, contact the storage cluster using the DB defined storage
nodes if they are already managed (at least one is linked to a resource),
otherwise defer to the rhq.storage.nodes property value and redefine the
persisted storage nodes with the [potentially] updated addresses.

(cherry picked from commit 0c12b74c6b282665ff0f9c10ba6712a100bf90c7)
Signed-off-by: Jay Shaughnessy <jshaughn@redhat.com>