Create pipeline when media session is initated

Change-Id: If7da09a8bbf229e09941caaaf6b7789c02219d39
Configure media session from SDP answer

Change-Id: I4e6e6f43d3d750511138b084e887efef6bcc3edc
Fingerprint as upper case

This is needed for Firefox

Change-Id: I4820aa15e60c17771cd4095eda4c98c9125ca9e8
Use SHA-256 for fingerprint

Change-Id: I508934f7515253e822fb5dea3dee53e172fa3516
Use 2 components for ICE agent

This is needed for RTP and RTCP in Firefox

Change-Id: I36e5963c080c440c7d35eeff558060442789e089
Ensure not use IPv6 as connection (c=) address

Change-Id: Ic891e96548dfcb5f33d053fd844d071a2b2dec45