Allow for mocking an SDK in the tests

Test: in followup patches
Change-Id: I540ce2a455c92be52eb94fbd4b54a2081d04d25e
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index 01ffb03..ea4d82a 100755
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -97,12 +97,14 @@
 import static android.system.OsConstants.ETH_P_ALL;
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
+
 import static com.android.net.module.util.NetworkMonitorUtils.isPrivateDnsValidationRequired;
 import static com.android.net.module.util.PermissionUtils.checkAnyPermissionOf;
 import static com.android.net.module.util.PermissionUtils.enforceAnyPermissionOf;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermission;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermissionOr;
 import static com.android.server.ConnectivityStatsLog.CONNECTIVITY_STATE_SAMPLE;
+
 import static java.util.Map.Entry;
 
 import android.Manifest;
@@ -1315,6 +1317,10 @@
             return SdkLevel.isAtLeastU();
         }
 
+        public boolean isAtLeastV() {
+            return SdkLevel.isAtLeastV();
+        }
+
         /**
          * Get system properties to use in ConnectivityService.
          */