updating Service Fabric change log

Author: Alfredo Santamaria Gomez

src/ResourceManager/ServiceFabric/Commands.ServiceFabric/ChangeLog.md

@@ -18,6 +18,11 @@
         - Additional information about change #1
 -->
 ## Current Release
+* Fix add certificate to Linux Vmss.
+
+* Fix `Add-AzureRmServiceFabricClusterCertificate` to display exception correctly (Azure/service-fabric-issues#1054).
+
+* Fix `Update-AzureRmServiceFabricDurability` to update cluster configuration before starting Vmss CreateOrUpdate operation.
 
 ## Version 0.3.12
 * Fixed issue with default resource groups not being set.