Change the order of the workflow when update server playback info

Change the order of the workflow when update server playback info

when playback state is "PLAYING", latest server should be updated.
but previous coude send dbus msg of updating playback info to the client first and then update latest server info.
However, some client apps could expect to update the latest server info when they receive a dbus msg of "PLAYING".
but when clients check it right after getting the dbus msg, db didn't updated yet.
So change order to do update latest server info first before send dbus msg to the client.

Change-Id: I2d659287e1f8e5d758e13ea69f481701a8f287e3