Add mainline skipping to CVE-2020-0437

aml-module-cellbroadcast:com.google.android.cellbroadcast

Test: sts-tradefed run sts-engbuild-no-spl-lock -m CtsSecurityBulletinHostTestCases -t android.security.cts.Poc20_11#testPocCVE_2020_0437
Bug: 162741784
Change-Id: If0afc36dea3012a05fcfe3773fb481b0a1711e1b
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc20_11.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc20_11.java
index cfa53ef..627f098 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc20_11.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc20_11.java
@@ -22,6 +22,7 @@
 import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
 
 import static org.junit.Assert.*;
+import static org.junit.Assume.*;
 
 @RunWith(DeviceJUnit4ClassRunner.class)
 public class Poc20_11 extends SecurityTestCase {
@@ -32,6 +33,7 @@
     @Test
     @SecurityTest(minPatchLevel = "2020-11")
     public void testPocCVE_2020_0437() throws Exception {
+        assumeFalse(moduleIsPlayManaged("com.google.android.cellbroadcast"));
         AdbUtils.runCommandLine("logcat -c", getDevice());
         AdbUtils.runCommandLine(
             "am broadcast " +