Support new volume workload

[AbdelrahmanElawady]

Description

A new Volume workload has been added to ZOS. It should act the same as ZMounts with some extra enhancements in performance as it go through less layers of virtualization.

Volumes work with container images out of the box and our official VM images. For custom VM images virtiofs module must be enabled in the image kernel.

Note: raw images are not supported

Interface

The new workload is of type volume and has the same structure as ZMount:

{
    "size": <size-in-bytes>
}

[zaelgohary]

Work completed:

Added volume workload in grid client and used it while creating disk instead of zmount.

[AhmedHanafy725]

verified