1. Remove tools:replace in manifest files. This attribute is only needed to establish priority when two manifests are merged and have the same attribute with different values.
As this is not happening here, the attributes can be removed.
2. Some BUILD files also define a deprecated manifest merge strategy different from the android default merge strategy. For consistency these are set to "android'.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=158075128
This will be used to merge adaptation sets that are marked for
seamless switching into single TrackGroups in DashMediaSource.
Issue: #2431
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=157209358