refactor(cleanup.py): rename vhdSize to coalescedSize (storage speed helpers)

Signed-off-by: Ronan Abhamon <ronan.abhamon@vates.fr>

Author: Wescoeur

drivers/cleanup.py

@@ -2368,11 +2368,11 @@ def _coalesceLeaf(self, vdi):
                                        .format(uuid=vdi.uuid))
         return self._liveLeafCoalesce(vdi)
 
-    def calcStorageSpeed(self, startTime, endTime, vhdSize):
+    def calcStorageSpeed(self, startTime, endTime, coalescedSize):
         speed = None
         total_time = endTime - startTime
         if total_time > 0:
-            speed = float(vhdSize) / float(total_time)
+            speed = float(coalescedSize) / float(total_time)
         return speed
 
     def writeSpeedToFile(self, speed):
@@ -2400,8 +2400,8 @@ def writeSpeedToFile(self, speed):
             Util.log("Closing file: {myfile}".format(myfile=path))
             self.unlock()
 
-    def recordStorageSpeed(self, startTime, endTime, vhdSize):
-        speed = self.calcStorageSpeed(startTime, endTime, vhdSize)
+    def recordStorageSpeed(self, startTime, endTime, coalescedSize):
+        speed = self.calcStorageSpeed(startTime, endTime, coalescedSize)
         if speed is None:
             return