java_sdk_library: Add system-server scope

Bug: 155164730
Test: m nothing
Merged-In: I49a2dab5c064b05f16691a3fae65f2b4ffc53bfd
Change-Id: I49a2dab5c064b05f16691a3fae65f2b4ffc53bfd
(cherry picked from commit 5a757b1ebb)

java/testing.go

@@ -80,6 +80,13 @@ func TestConfig(buildDir string, env map[string]string, bp string, fs map[string
 		"prebuilts/sdk/30/test/api/bar-removed.txt":                nil,
 		"prebuilts/sdk/tools/core-lambda-stubs.jar":                nil,
 		"prebuilts/sdk/Android.bp":                                 []byte(`prebuilt_apis { name: "sdk", api_dirs: ["14", "28", "30", "current"],}`),
+
+		// For java_sdk_library
+		"api/module-lib-current.txt":                        nil,
+		"api/module-lib-removed.txt":                        nil,
+		"api/system-server-current.txt":                     nil,
+		"api/system-server-removed.txt":                     nil,
+		"build/soong/scripts/gen-java-current-api-files.sh": nil,
 	}
 
 	cc.GatherRequiredFilesForTest(mockFS)