detachobject: Update volume config after detaching a plex.
detachobject: Update volume config after detaching a plex.

update_volume_config: Remove redundant diskconfig parameter.

Approved by: re (jhb)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase