meta2v2: add local flag check on some requests (test purpose).

Change-Id: Idd014ae1089b2d5ab5487a87cd943ca9244a6f95
Remote API reviewed.

We now provide a new set of API with a uniform style.
The main benefit is now to handle session ID's in all RPC.
These session identifiers are already handled by the redcurrant daemons, and propagating a single session id in all the requests belonging to a single session really helps to consolidate the logs.

Change-Id: Iec8969fed2f1280822d92d1575ccf7e15b46cd42