GOLD-655: Bug, apps.cinder.utils.DiscoverTree.build_topology_tree, bad optimization of check on new_rl variable.
GOLD-655: Bug, apps.cinder.utils.DiscoverTree.build_topology_tree, bad optimization of check on new_rl variable.

Solinea/goldstone-server,slashk/goldstone-server,Solinea/goldstone-server,slashk/goldstone-server,slashk/goldstone-server,Solinea/goldstone-server,Solinea/goldstone-server,Solinea/goldstone-server,slashk/goldstone-server,slashk/goldstone-server