Rename ART release APEX to com.android.art.

Test: Build & boot on AOSP master
Test: `m` on AOSP master, flipping
  PRODUCT_ART_TARGET_INCLUDE_DEBUG_BUILD between true and false, and
  check out/target/product/bonito/symbols/apex/com.android.art.
Test: art/build/apex/runtests.sh
Test: art/tools/buildbot-build.sh {--host,--target}
Test: art/tools/run-gtests.sh
Test: m test-art-host-gtest
Test: art/test/testrunner/testrunner.py --target --64 --optimizing
Test: m build-art-target-golem
Bug: 169639321
Change-Id: Ic4bb8d6f9988ce99bba326b9c635bd3c01ed74ab
Merged-In: Ic4bb8d6f9988ce99bba326b9c635bd3c01ed74ab
35 files changed