CTS: Add subclasses for api-check classes

Separate the different configurations through changing the test
class names.

Bug: 123719746
Test: manual
Change-Id: Idddd4e8a8256af5b01f015ea80245c2557fd1c7b
diff --git a/tests/signature/api-check/current-api/AndroidTest.xml b/tests/signature/api-check/current-api/AndroidTest.xml
index 59b7bd6..8253275 100644
--- a/tests/signature/api-check/current-api/AndroidTest.xml
+++ b/tests/signature/api-check/current-api/AndroidTest.xml
@@ -37,7 +37,7 @@
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="android.signature.cts.api.current" />
         <option name="runner" value="repackaged.android.test.InstrumentationTestRunner" />
-        <option name="class" value="android.signature.cts.api.SignatureTest" />
+        <option name="class" value="android.signature.cts.api.current.SignatureTest" />
         <option name="instrumentation-arg" key="expected-api-files" value="current.api" />
         <option name="instrumentation-arg" key="unexpected-api-files" value="android-test-mock-current.api,android-test-runner-current.api" />
         <option name="runtime-hint" value="30s" />