[Hls] Remove hard code for finding audio streams with the same uri
[Hls] Remove hard code for finding audio streams with the same uri

For audio only content that the audio variant tag and media tag has the
same uri, we should compare all media tag uris with the variant tag uri,
instead of comparing only the first one.

Change-Id: Ifa985eae441076418fc289e5601020c06c135c24

shaka-project/shaka-player,tvoli/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,shaka-project/shaka-player,tvoli/shaka-player