fs: perform a full GC after every VDI.destroy
fs: perform a full GC after every VDI.destroy

djs55/message-switch,xapi-project/message-switch,djs55/message-switch-1,djs55/message-switch-1,djs55/message-switch-1,djs55/message-switch,djs55/message-switch,xapi-project/message-switch,xapi-project/message-switch