Use Case Overview:

As an administrator, I need to know how I can use the RHV Manager to create and manage local storage (single brick gluster volume as the storage domain, not the hosted engine storage domain) and local replicated (replica 3) storage in new and existing RHV 4.2.2 deployments (existing engine is expected).

This use case requires the following documentation:
(a) concept information that explains the advantages of implementation
(i) optimizes gdeploy configurations that cannot currently be performed by the engine. As a result, provides the ability to evolve (an existing) RHV cluster or leverage (a new) RHV cluster
(b) task information that describes how the customer can implement on 
an existing RHV cluster or a new RHV cluster
(i) allows gdeploy node and volume configurations to be 
performed while creating the volume from RHV
(ii) RHV Manager to enable lvmcache
(iii) engine's gluster volume optimized for virt store use case
(iv) scaling from 1 node to replica 3 (1x3)
(v) RHV Manager to provision multiple bricks from the same 
device
(vi) convert RHV cluster to HC cluster