[cts/SettingsProviderPerfTest] use an allowlisted namespace

Change-Id: Id99b34ec570c19d9a9a99cef52395337844e20c4
BUG: 358252039
Test: abtd
FIXES: 358252039
FLAG: EXEMPT test only
diff --git a/apct-tests/perftests/settingsprovider/src/android/provider/SettingsProviderPerfTest.java b/apct-tests/perftests/settingsprovider/src/android/provider/SettingsProviderPerfTest.java
index c00c8d5..06cd942 100644
--- a/apct-tests/perftests/settingsprovider/src/android/provider/SettingsProviderPerfTest.java
+++ b/apct-tests/perftests/settingsprovider/src/android/provider/SettingsProviderPerfTest.java
@@ -36,7 +36,7 @@
 
 @RunWith(AndroidJUnit4.class)
 public final class SettingsProviderPerfTest {
-    private static final String NAMESPACE = "test@namespace";
+    private static final String NAMESPACE = "testing";
     private static final String SETTING_NAME1 = "test:setting1";
     private static final String SETTING_NAME2 = "test-setting2";
     private static final String UNSET_SETTING = "test_unset_setting";