Eloi Bail authored Nov 30, 2015 and Eloi Bail committed Dec 03, 2015

When several calls were performed, quality and bitrates of previous
call were used. When stopping VideoRtpSession, we make sure to reset default
values.

Change-Id: Ibe7b58f33979fae734dbbe3f7c31bd4d57c5a13f
Tuleap: #156