Merge pull request #335 from robhoes/1.96-lcm

XSI-791/CA-343760: Backport to yangtze

CA-361220: xenopsd: introduce TASK.destroy_on_finish

There are certain tasks that are run asynchronously without anyone
waiting for the result (e.g. import_metadata_async).
Allow setting a flag on these tasks, so that they are cleaned up when
finished (either successfully or not).

Needed to avoid space leaks due to an ever growing tasks/updates list.

Signed-off-by: Edwin Török <[email protected]>

CP-35026 optionally include client info in logs

Signed-off-by: lippirk <[email protected]>
(cherry picked from commit 9e23539)

v1.96.2

CP-38064: compatibility with rpclib 7