Based on https://review.openstack.org/#/c/214691/
Some concern raised about remove a header may need
microversion bump, update devref to indicate that
it sould be ok to update without microversion usage.
Co-Authored-By: Alexis Lee <lxsli@hpe.com>
Change-Id: I0b9e6e384b54ae8bfc7896f0135cd443ccfe2b1e