Guillaume Roguez authored Jun 16, 2017 and Adrien Béraud committed Jun 17, 2017

Increase jitter-buffers size/delay in TLS and RTP channels.
Gives better results on high-latency connections (i.e. with TURN enabled).

Note: also refactor RTP constants coding to be more easier to tweak.

Change-Id: Ia4cb78306465e2385a52728629942b4d07330f13