ajout de ressources au fichier python
modify for all ressources

will make for just VM and node
add ressources only for VM
add physical informations for Nodes
add uuid and virtual not exceed physical memory

will fix for sum of virtual
UUID replace VM names
modify how to add vm informations
fix #20

add:
-physical ressources at nodes
-virtual ressources at vm depending of p_ressources and ration
Merge branch 'developpement' into Ressources
fix #20

add and display free ressources
fix #20

add all virtual and physical ressources
add all ratio
merge branch 'ressources' into 'developpement'
merge branch ressources into developpement

resolve conflict