Update Compute change log for October release

Author: hyonholee

src/ResourceManager/Compute/ChangeLog.md

@@ -17,4 +17,12 @@
     * Overview of change #1
         - Additional information about change #1
 -->
-## Current Release
+## Current Release
+
+    * Update formats for list of VMs, VMScaleSets and ContainerService
+        - The default format of Get-AzureRmVM, Get-AzureRmVmss and Get-AzureRmContainerService is not table format when these cmdlets call List Operation
+    * Fix overprovision issue for VMScaleSet
+        - Because of the bug in Compute client library (and Swagger spec) regarding overprovision property of VMScaleSet, this property did not show up correctly.
+    * Better piping scenario for VMScaleSets and ContainerService cmdlets
+        - VMScaleSet and ContainerService now have "ResourceGroupName" property, so when piping Get command to Delete/Update command, -ResourceGroupName is not required.
+    * Separate paremater sets for Set-AzureRmVM with Generalized and Redeploy parameter