update phy entity tables to account for modified psu key naming (sonic-net#640)

Description
Modify every instance of PSU parent naming to attempt to call the get_name API from the PSU/parent object, falling back to the prior implemented default behavior in the case that the API is not yet implemented by the vendor.

Motivation and Context
Issue raised: sonic-net#638, the key changes that took place previously on PSUD missing updating their associated phy entity tables in thermalctld. This PR makes the changes to account for this change.

Author: gregoryboudreau

sonic-thermalctld/scripts/thermalctld

@@ -297,7 +297,7 @@ class FanUpdater(logger.Logger):
         """
         drawer_name = NOT_AVAILABLE if fan_type != FanType.DRAWER else str(try_get(parent.get_name))
         if fan_type == FanType.PSU:
-            parent_name = 'PSU {}'.format(parent_index + 1)
+            parent_name = try_get(parent.get_name, default='PSU {}'.format(parent_index + 1))
         elif fan_type == FanType.MODULE:
             parent_name = try_get(parent.get_name, default='Module {}'.format(parent_index + 1))
         else:
@@ -600,7 +600,7 @@ class TemperatureUpdater(logger.Logger):
             self._refresh_temperature_status(CHASSIS_INFO_KEY, thermal, index)
 
         for psu_index, psu in enumerate(self.chassis.get_all_psus()):
-            parent_name = 'PSU {}'.format(psu_index + 1)
+            parent_name = try_get(psu.get_name, default='PSU {}'.format(psu_index + 1))
             if psu.get_presence():
                 for thermal_index, thermal in enumerate(psu.get_all_thermals()):
                     if self.task_stopping_event.is_set():
@@ -641,7 +641,7 @@ class TemperatureUpdater(logger.Logger):
 
                 for psu_index, psu in enumerate(module.get_all_psus()):
                     if psu.get_presence():
-                        psu_name = '{} PSU {}'.format(module_name, psu_index + 1)
+                        psu_name = try_get(psu.get_name, default='{} PSU {}'.format(module_name, psu_index + 1))
                         for thermal_index, thermal in enumerate(psu.get_all_thermals()):
                             if self.task_stopping_event.is_set():
                                 return