[sophia][mercantour7] ajout CPU et model

input/grid5000/sites/sophia/clusters/mercantour7/mercantour7.yaml

 ---
-model: Cluster Model # TODO: change this value.
-created_at: 1970-01-01 # TODO: change this value
+model: Dell PowerEdge R7525
+created_at: 2025-03-20
 kavlan: false
-boot_type: uefi # TODO: specify if 'uefi' (ideally) or 'bios' (legacy, if no other choice)
-exotic: false # TODO: specify if 'true' or 'false'
+boot_type: uefi 
+exotic: false 
 queues:
   - admin
   - testing
@@ -17,8 +17,8 @@ nodes:
       besteffort: true
       max_walltime: 0
     processor:
-      microarchitecture: Haswell # TODO: replace with microarch name.
-      clock_speed: 8 # TODO: Replace with clock speed.
+      microarchitecture: Zen 2
+      clock_speed: 2500000000
     network_adapters:
       bmc:
         interface: Ethernet