If user changed codec parameters such as bitrate using dbus API, audio and
video codec will be automatically restart with up-to-date parameters.

Audio and video ports previously negotiated on the previous media session will
stay the same. In order to avoid dropped framed, RTP sequence number from
previous session will be reused. Thus new session will use continuous sequence
number.

Refs #77483
Change-Id: Idce0f8b3a0537f0db6def054cfdb8765440d2cd7