CA-277837: SR.attach: take a uuid parameter too
CA-277837: SR.attach: take a uuid parameter too

When doing SR.create the SM can put the uuid into the uri it returns,
however with SR.introduce we don't have the uuid inside the uri.

Always pass the uuid explicitly to attach so that both create and introduce
works.

Signed-off-by: Edwin Török <c8d178016cbaf8a6ef23c2cbc9db96123c48b7dc@citrix.com>

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