+> [ 2.000000] (4:david@host2) == Print the properties of the host 'node-0.acme.org'
+> [ 2.000000] (4:david@host2) Host property: 'mem' -> '42'
+> [ 2.000000] (4:david@host2) Host property: 'bla' -> 'acme cluster'
+> [ 2.000000] (4:david@host2) Host property: 'name' -> 'AS2'
+> [ 2.000000] (4:david@host2) Host property: 'Hdd' -> '180'
+> [ 2.000000] (4:david@host2) == Try to get a host property that does not exist
+> [ 2.000000] (4:david@host2) == Try to get a host property that does exist
+> [ 2.000000] (4:david@host2) Property: Hdd old value: 180
+> [ 2.000000] (4:david@host2) == Trying to modify a host property
+> [ 2.000000] (4:david@host2) Property: Hdd old value: 250