Added: * Faults manager - a compnent for managing faults (load them, connect os-faults to cloud, exdcute faults, etc.). * Faults for test_floatingip test class Also, modified test_floatingip tests to run faults if faults manager set up properly (loaded configuration file, managed to connect the nodes of the cloud, etc.). Change-Id: I1dd48bc9a7cc385a46d9b3b2382000581a614b42