Embed an sdkinfo proto in the test media apex

This is used in sdkextensions_e2e_test to verify the sdk version gets
bumped correctly for multiple updated modules.

Bug: 149815613
Test: sdkextensions_e2e_test
Exempt-From-Owner-Approval: clean cp from internal
Change-Id: If98002f378c82d7d1d1454b40b285c3a4f3ed959
Merged-In: If98002f378c82d7d1d1454b40b285c3a4f3ed959
(cherry picked from commit 9ff91b4e)