BugLink: http://bugs.launchpad.net/bugs/1670508

We need to recognize and parse transformed packets in demultiplex
thread to find a corresponsing mid and process it further.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
(cherry picked from commit 9bb17e09)
Signed-off-by: Joseph Salisbury <joseph.salisbury@canonical.com>