prevent them from being serialised alongside the API properties. This will also
be useful for moving the API bindings out of XenModel.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
-When detaching an SR, we detach the slaves first
-When reattaching the SR, we attach the master first
This fix was required by thin provisioning, but it does worth to use the same logic regardless of the provisioning method.
