Description of problem:

Gluster block storage creation and maintenance is not simple
today, as it involves all the manual steps like

1. Creating the file in the gluster volume.
2. Mapping the target file from the volume.
3. Creating the LUN.
4. setting the appropriate ACLs
5. set UserID and password for authentication.
6. Creation of multipatd targets of HA, involves repetition of above steps in each node.

To make this basic operations simple we would like to integrate the
block story with gluster CLI.

As part of it, we should introduce the following minimum commands

# gluster block create <NAME>
# gluster block modify <SIZE> <AUTH> <ACCESS MODE>
# gluster block list
# gluster block delete <NAME>


Version-Release number of selected component (if applicable):
mainline