Move suggestions test package to sdk 26

Test: make RunSettingsRoboTests -j40
Change-Id: I373f98254fd6058616be104fe02cf19e3964a487
diff --git a/tests/robotests/src/com/android/settings/suggestions/SettingsSuggestionsTest.java b/tests/robotests/src/com/android/settings/suggestions/SettingsSuggestionsTest.java
index 677bf41..4f0bee2 100644
--- a/tests/robotests/src/com/android/settings/suggestions/SettingsSuggestionsTest.java
+++ b/tests/robotests/src/com/android/settings/suggestions/SettingsSuggestionsTest.java
@@ -41,7 +41,7 @@
 import java.util.Map;
 
 @RunWith(SettingsRobolectricTestRunner.class)
-@Config(manifest = MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+@Config(manifest = MANIFEST_PATH, sdk = TestConfig.SDK_VERSION_O)
 public class SettingsSuggestionsTest {
 
     private static final String CATEGORY_FIRST_IMPRESSION =