handover_test: send ho detection

So far we skipped the HO Detection message, because the FSM also accepts
a handover when the Handover Complete arrives without a Detection.
Rather model the real behavior.

Also send the EST IND message and RTP-ready events from the ho
detection.

Change-Id: Ib676e74f23ef9cd1b55262117822b0e110013bdc
1 file changed