Fix test configurations under `libartservice/service`.

When `libartservice/service/AndroidTest.xml` was added (in commit
a87a179785c3c6a87cfe08a93c94cf1c769ecb21), `ArtServiceTests` started
to implicitly use it as its test configuration (which was the intended
effect), but so did other tests in this directory
(`art_libartservice_tests`, `art_standalone_libartservice_tests`),
which is incorrect, as those tests have their own test configurations,
previously inherited through a `defaults` module.

Address this issue by renaming `libartservice/service/AndroidTest.xml`
as `libartservice/service/ArtServiceTests.xml` and using the latter as
an explicit test configuration for test module `ArtServiceTests`.

Test: atest ArtServiceTests
Test: m mts \
        && mts-tradefed run commandAndExit mts-art \
             -m art_standalone_libartservice_tests
Bug: 243936548
Bug: 229268202
Bug: 167385698
Ignore-AOSP-First: `libartservice/service/AndroidTest.xml` not in AOSP
Change-Id: I7843dd2f4be7d1b9c8268f8affe067705c8ca813
2 files changed