switch from hardware object to string

and replace mac address to disk serial number
for more predictable hash key

Azaion.Inference/api_client.pyx

@@ -8,7 +8,7 @@ cimport constants
 import yaml
 
 from cdn_manager cimport CDNManager, CDNCredentials
-from hardware_service cimport HardwareService, HardwareInfo
+from hardware_service cimport HardwareService
 from security cimport Security
 from user cimport User, RoleEnum
 
@@ -85,7 +85,7 @@ cdef class ApiClient:
 
     cdef load_bytes(self, str filename, str folder):
         hardware_service = HardwareService()
-        cdef HardwareInfo hardware = hardware_service.get_hardware_info()
+        cdef str hardware = hardware_service.get_hardware_info()
 
         if self.token is None:
             self.login()
@@ -98,7 +98,7 @@ cdef class ApiClient:
         payload = json.dumps(
         {
             "password": self.credentials.password,
-            "hardware": hardware.to_json_object(),
+            "hardware": hardware,
             "fileName": filename
         }, indent=4)
         response = requests.post(url, data=payload, headers=headers, stream=True)