The resource name should be CinderBackendDellEMCVxFlexOS instead of
CinderBackendVxFlexOS.
Change-Id: I2460c87eb8e7de709e88949311e2bf70c0ada2d3
Closes-Bug: #1903634
Dell EMC VxFlex OS Cinder config is now
deprecated. Use the new resource
OS::TripleO::Services::CinderBackendDellEMCPowerFlex
Depends-On: https://review.opendev.org/#/c/743851/
Change-Id: I70ab03cc2680885165af4f1dd6089106319209a0