Merge "Support reading block apexes from system_server" am: 6d3bc08dbb am: 4ead13bfc9 am: 4412c7d16f am: 636a591f9c

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1899604

Change-Id: Ic8d025b91043b5713ffc0039b0f641cbb4c1dd34