Adding @IgnoreUpTo for testOemPrivate

Adding @IgnoreUpTo for NetworkCapabilitiesTest.testOemPrivate so that
this test can run on previous releases.

Bug: 172400600
Bug: 171505922
Test: atest CtsNetTestCasesLatestSdk:NetworkCapabilitiesTest
Change-Id: Ibc728c986ad6faeed78c631ca2675956b95c6ac1
diff --git a/tests/net/common/java/android/net/NetworkCapabilitiesTest.java b/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
index 11a83eb..6b7ea66 100644
--- a/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
+++ b/tests/net/common/java/android/net/NetworkCapabilitiesTest.java
@@ -359,7 +359,7 @@
         assertFalse(nr.satisfiedByNetworkCapabilities(new NetworkCapabilities()));
     }
 
-    @Test
+    @Test @IgnoreUpTo(Build.VERSION_CODES.R)
     public void testOemPrivate() {
         NetworkCapabilities nc = new NetworkCapabilities();
         // By default OEM_PRIVATE is neither in the unwanted or required lists and the network is