Add message to change log

Author: Kamran Khan

src/ResourceManager/Compute/ChangeLog.md

@@ -1,4 +1,4 @@
-<!--
+<!--
     Please leave this section at the top of the change log.
 
     Changes for the current release should go under the section titled "Current Release", and should adhere to the following format:
@@ -19,6 +19,8 @@
 -->
 ## Current Release
 
+* Backup encryption settings for IaaS VMs and restore on failure
+
 ## Version 2.9.0
 
 * Fix bug in Get-* cmdlets, to allow retrieving multiple pages of data (more than 120 items)