CP-27591: Convert to new xapi-storage interface based on ocaml-rpc's IDL
CP-27591: Convert to new xapi-storage interface based on ocaml-rpc's IDL

This PR also removes the working directory from the script invocation:
we do not set it explicitly any more.

Signed-off-by: Gabor Igloi <7535f5501fd71876c93d896691e178fd3a11cfbb@citrix.com>

xapi-project/message-switch,xapi-project/message-switch,xapi-project/message-switch