Ignore flaky ApexSystemServicesTestCases.

It seems depending on logcat output for signaling introduces a
persistent flakiness to the tests. Mark them @Ignore until a better
solution is available, which disables the tests on presubmit.

The test is still part of mts-core which shouldn't be ignoring these
test cases though.

Bug: 218368479
Test: presubmit
Change-Id: I154e7fecab044d1f6406b98be8e3873a6ff03c5e

TEST_MAPPING

@@ -26,6 +26,9 @@
       "options": [
         {
           "exclude-annotation": "androidx.test.filters.FlakyTest"
+        },
+        {
+          "exclude-annotation": "org.junit.Ignore"
         }
       ]
     },

services/tests/apexsystemservices/src/com/android/server/ApexSystemServicesTestCases.java

@@ -31,6 +31,7 @@ import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.RuleChain;
@@ -80,6 +81,7 @@ public class ApexSystemServicesTestCases extends BaseHostJUnit4Test {
                 .doesNotContain("FakeApexSystemService onStart");
     }
 
+    @Ignore
     @Test
     public void testApexSystemServiceStarts() throws Exception {
         // Pre-install the apex
@@ -94,6 +96,7 @@ public class ApexSystemServicesTestCases extends BaseHostJUnit4Test {
                 .contains("FakeApexSystemService onStart");
     }
 
+    @Ignore
     @Test
     public void testInitOrder() throws Exception {
         // Pre-install the apex