Add service-art to sdk

Overrides the defaults setting of sdk_version: "module_current" for the
public and sdk_version: "system_server_current" for the system_server
stub libraries as that is not available in master-art.

Bug: 193044041
Test: DIST_DIR=$PWD/dist TARGET_BUILD_VARIANT=userdebug art/build/build-art-module.sh --skip-apex
      packages/modules/ArtPrebuilt/update-art-module-prebuilts.py --local-dist=dist --skip-cls --skip-apex
      - check that service-art is added
Change-Id: I078956714fd333b29d5f12384e1fd313044a92e4
2 files changed