The 3PAR backend supports Active/Active replication.
The 3PAR driver on host doesn't yet provide High Availability
Support.
As part of https://review.opendev.org/#/c/677945/,
flag for Active/Active was incorrectly added.
This needs to be reverted.
Change-Id: Ifc31f0309341406b640f74f6e796f0c35f63874b
(cherry picked from commit 562090e995)