Add libvirt's event listeners and use them to implement a graceful stop

Add libvirt's event listeners and use them to implement a graceful stop

[Bug/Feature]   Orginize container's shutdown process
[Cause]         Burdello
[Solution]      Implemented listeners for libvirt's events (lifecycle and reboot)
                Added libvirt-glib dependency to use glib main loop for those events.
                Used those listeners to implement a synchronous graceful stop of
                the container: "try to shutdown, if it wont in 10 seconds, destroy it".
                Added thread ID to the logger.
                Organized container related logs a little.
[Verification]  Built, installed, run tests and the daemon.

Change-Id: I3be53a2a46cd130cf414e89b0c47eb1cce74e6b5
Signed-off-by: Lukasz Pawelczyk <l.pawelczyk@partner.samsung.com>