Disable NetworkRequestTest#testDefaultCapabilities

The test has been failing for awhile since it wasn't running in
presubmit. Disable to unblock presubmit while a proper fix is
investigated.

Bug: 338200742
Test: atest NetworkRequestTest
Change-Id: I2af91619be945cbe023a84685f15da49a45601bc
diff --git a/tests/cts/net/src/android/net/cts/NetworkRequestTest.java b/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
index 6ec4e62..5b53839 100644
--- a/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
+++ b/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
@@ -68,6 +68,7 @@
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -511,7 +512,7 @@
         assertArrayEquals(netCapabilities, nr.getCapabilities());
     }
 
-    @Test @IgnoreUpTo(VANILLA_ICE_CREAM)
+    @Test @IgnoreUpTo(VANILLA_ICE_CREAM) @Ignore("b/338200742")
     public void testDefaultCapabilities() {
         final NetworkRequest defaultNR = new NetworkRequest.Builder().build();
         assertTrue(defaultNR.hasForbiddenCapability(NET_CAPABILITY_LOCAL_NETWORK));