For information, the upgrade of VM tools is now supported by (Aruba) ClearPass
From ClearPass Installation Guide :
Manually Upgrading an ESXi Installation
This section describes how to perform a manual upgrade of a VMware ESXi virtual machine. This procedure is recommended only if you experience problems when taking snapshots of a virtual machine on an ESXi version 5.x or 6.x.
By default, ClearPass 6.6 comes with VMware Tools version 9.4.10.37835 installed in it. If you are going to perform a manual VMware Tools upgrade, you must first verify that a version of ClearPass is already installed.