RTP IuUP Emulation: Avoid spamming with retransmitted Init

Until now, an Init was sent on each RTP transmit period, clogging the
pcap files. Moreover, this is break by design, since transmitting
another Init so close the the previous one would give no time to the
transmitter to receive the Init ACk and move state, which means the
other end would potentially be reconfigured each time (for each Init).

Change-Id: I8e299a3fe49f9d31cae182f7ed4dc0ea3fc22ba2
2 files changed