ahat-tests: Use LOCAL_TEST_CONFIG to set test config

Stop building a test config for ahat, just ahat-tests.

Bug: 110982517
Bug: 113503164
Bug: 113502250
Test: . build/envsetup.sh; lunch
      m -j ahat-tests. Then,
      ./host/linux-x86/testcases/ahat-tests/ahat-tests.config
      will be generated.
      m -j ahat; No test config will be generated.

      Or  atest ahat-tests

Change-Id: Id4a9c3f5fea18d112f1495f313c02d2fdb5c1443
diff --git a/tools/ahat/Android.mk b/tools/ahat/Android.mk
index 8c74817..3b5230f 100644
--- a/tools/ahat/Android.mk
+++ b/tools/ahat/Android.mk
@@ -165,6 +165,7 @@
 LOCAL_IS_HOST_MODULE := true
 LOCAL_MODULE_TAGS := tests
 LOCAL_MODULE := ahat-tests
+LOCAL_TEST_CONFIG := ahat-tests.xml
 LOCAL_COMPATIBILITY_SUITE := general-tests
 include $(BUILD_HOST_JAVA_LIBRARY)
 AHAT_TEST_JAR := $(LOCAL_BUILT_MODULE)
diff --git a/tools/ahat/AndroidTest.xml b/tools/ahat/ahat-tests.xml
similarity index 100%
rename from tools/ahat/AndroidTest.xml
rename to tools/ahat/ahat-tests.xml