Wrong `QCOW2_STANDALONE` option in NFS System Datastore

[OpenNebulaSupport]

Description
The QCOW2_STANDALONE option is available when creating a NFS System Datastore. However, this option is exclusive to Image Datastores as documented in NFS/NAS Datastore - Additional Configuration.

To Reproduce
Create a new Datastore from the Sunstone interface, using shared mode backend.
Select IMAGE as Datastore type. Configuration attributes" tab includes the QCOW2_STANDALONE option.
Select SYSTEM as Datastore type. Configuration attributes" tab includes the QCOW2_STANDALONE option.

Expected behavior
The QCOW2_STANDALONE option should be available when selecting IMAGE and it should not be available when selecting SYSTEM.

Details

• Affected Component: Sunstone
• Hypervisor: KVM
• Version: 7.0

Additional context
Add any other context about the problem here.

Progress Status

• Code committed
• Testing - QA
• Documentation (Release notes - resolved issues, compatibility, known issues)