Add apex com.android.runtime.host artifact

Fixed and added com.android.runtime.host tests to
build/apex/runtests.sh.

Test: m com.android.runtime.host
Test: ./art/build/apex/runtests.sh
Bug: 120436895
Change-Id: I90b30fe5fac11de1a53668083be0be82ef282514
2 files changed