Change to allow receiving PPS before SPS.
Change to allow receiving PPS before SPS.

Change-Id: I9c5a62a9b8948420cd45be39805a60db128964ac

leandromoreira/edash-packager,leandromoreira/edash-packager,leandromoreira/edash-packager,nevil/edash-packager,nevil/edash-packager,leandromoreira/edash-packager,leandromoreira/edash-packager,nevil/edash-packager